USH670H - Herbicidal composition - Google Patents
Herbicidal composition Download PDFInfo
- Publication number
- USH670H USH670H US07/230,395 US23039588A USH670H US H670 H USH670 H US H670H US 23039588 A US23039588 A US 23039588A US H670 H USH670 H US H670H
- Authority
- US
- United States
- Prior art keywords
- chloro
- weight
- parts
- compound
- compound selected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N41/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom
- A01N41/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom containing a sulfur-to-oxygen double bond
- A01N41/04—Sulfonic acids; Derivatives thereof
- A01N41/06—Sulfonic acid amides
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
- A01N47/36—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N39/00—Biocides, pest repellants or attractants, or plant growth regulators containing aryloxy- or arylthio-aliphatic or cycloaliphatic compounds, containing the group or, e.g. phenoxyethylamine, phenylthio-acetonitrile, phenoxyacetone
- A01N39/02—Aryloxy-carboxylic acids; Derivatives thereof
- A01N39/04—Aryloxy-acetic acids; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
Definitions
- the present invention relates to a herbicidal composition
- a herbicidal composition comprising as the effective components at least one compound selected from among pyridinesulfonamide compounds and their salts, and at least one other specific herbicidal compound.
- Japanese patent application No. 62-8286 (published on Aug. 5, 1987 as publication No. KOKAI 62-178588) discloses herbicidal pyridinesulfonamide compounds having the formula: ##STR2## wherein R 1 and R 2 are a hydrogen atom or an alkyl group, X and Y are a methyl group or a methoxy group, and A is ⁇ CH- group or ⁇ N- group, and their salts.
- pyridinesulfonamide compounds may be mixed with another herbicidal compound, such as 3,6-dichloro-2-methoxybenzoic acid, 3-(1-methylethyl)-lH-2,1,3-benzothiadiazin-4(3H)-one-2,2-dioxide, 2-(4-chloro-6-ethylamino-1,3,5-triazin-2-ylamino)-2-methyl propionitrile, 2-chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine, ethyl 2,4-dichlorophenoxy acetate, 2-(3,5-dichlorophenyl)-2-(2,2,2-trichloroethyl) oxirane, N-(1-ethylpropyl)-2,6-dinitro-3,4-xylidine, 2-chloro-2',6'-diethyl-N-(
- European patent application Nos. 87300502.9 (published on Aug. 12, 1987 as publication No. 232,067) and 87301954.1 (published on Sept. 16, 1987 as publication No. 237,292) also disclose partly that the above described pyridinesulfonamide compounds may be mixed with another herbicidal compound such as those described in Japanese patent application No. 62-8286, without showing specific biological test data.
- the present invention provides a herbicidal composition
- a herbicidal composition comprising as the effective components at least one compound selected from among pyridinesulfonamide compounds of formula (I): ##STR3## wherein X is a hydrogen atom, a halogen atom, or a methyl group which may be substituted by 1 to 3 halogen atoms, and R is a hydrogen atom or a methyl group, and their salts, and at least one compound selected from the group consisting of 2,4-dichlorophenoxy acetic acid and its alkylester and salt, 3,6-dichloro-2-methoxybenzoic acid, 2-chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine, 3-(1-methylethyl)-lH-2,1,3-benzothiadiazin-4(3H)-one-2,2-dioxide, 2-chloro-2',6'-diethyl-N-(meth
- the herbicidal composition of the present invention provides a wider weeding spectrum than the use of any individual compound alone, and sufficient weed-killing effect throughout the entire period of growth of corns by spraying only once.
- a herbicidal composition characterized by comprising as the effective components at least one compound selected from among pyridinesulfonamide compounds represented by the formula (I): ##STR4## wherein X is a hydrogen atom, a halogen atom, or a methyl group which may be substituted by 1 to 3 halogen atoms, and R is a hydrogen atom or a methyl group, and their salts, and at least one compound selected from the group consisting of 2,4-dichlorophenoxy acetic acid and its alkylester and salt, 3,6-dichloro-2-methoxybenzoic acid, 2-chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine, 3-(1-methylethyl)-lH-2,1,3-benzothiadiazin-4(3H)-one-2,2-dioxide, 2-chloro-2',6'-diethyl-
- halogen atom as X in the formula (I) or the halogen atom by which the methyl group as X in the formula (I) may be substituted there can be mentioned a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
- an alkali metal salt such as sodium or potassium salt
- an alkali earth metal salt such as magnesium or calcium salt
- an amine salt such as monomethylamine, dimethylamine or triethylamine salt
- a salt of quaternary ammonium base such as trimethylethylammonium cation or tetramethylammonium cation.
- Pyridinesulfonamine compounds represented by the formula (I) and their salts include those as shown in the following Table 1.
- the mixing ratio (by weight) of the pyridinesulfonamide compound represented by the formula (I) or its salt to the other specific herbicidal compound is generally 1:800 to 200:1, desirably 1:200 to 20:1.
- the suitable amount of application of the compounds cannot uniquely be determined because it varies depending on the form of preparation, the time of application, the kind of object weed, and the like. In general, however, the amount of the pyridinesulfonamide compound represented by the formula (I) or its salt is about 0.05 to g/a, while the amount of the other specific herbicidal compound is about 0.05 to 40 g/a.
- the herbicidal composition of the present invention can be applied to a wide variety of sites including upland fields, orchards, mulberry fields, forests, agricultural roads, grounds, and factory sites.
- the method of application of the herbicidal composition can be arbitrarily chosen from a soil treatment application and a foliage treatment application.
- the herbicidal composition of the present invention is prepared by blending various adjuvants with the pyridinesulfonamide compound of the formula (I) and the other specific herbicidal compound to form an emulsifiable concentrate, a wettable powder, a suspension concentrate, granules, a dust, a water-soluble powder or the like according to any customary method of preparing an agricultural preparation.
- the pyridinesulfonamide compound of the formula (I) and the other specific herbicidal compound may be either mixed together and formed into a preparation, or formed into separate preparations and then mixed with each other.
- Examples of the abovementioned adjuvants include solid carriers such as diatomaceous earth, slaked lime, calcium carbonate, talc, white carbon, kaoline, bentonite, jeaklite, water soluble starch, and sodium bicarbonate; solvents such as toluene, xylene, solvent naphtha, ethanol, dioxane, acetone, isophorone, methyl isobutyl ketone, dimethylformamide, dimethylsulfoxide, and N-methyl-2-pyrrolidone; spreaders and surfactants such as sodium alkylsulfates, sodium alkylbenzenesulfonates, sodium lignosulfonate, polyoxyethylene glycol alkyl ethers, polyoxyethylene lauryl ether, polyoxyethylene alkylaryl ethers, polyoxyethylene fatty acid esters, and polyoxyethylene sorbitan fatty acid esters; and vegetable oils and mineral oils such as olive oil, kapok oil, castor oil,
- the above-mentioned components are mixed and pulverized to obtain a dust.
- the above-mentioned components are mixed and pulverized to obtain a dust.
- the above-mentioned components are mixed and pulverized to obtain a dust.
- the above-mentioned components are mixed uniformly and pulverized by Dyno-Mill (Willy A. Bachofen AG) to obtain a suspension concentrate.
- Dikssol W-92, W-66 and W-0913, and Lavelin S trade name of products manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.
- Newlite trade name of a product manufactured by Nippon Taikagenryo Co., Ltd.
- Sorpol 5050, 5073, 5039, 3815 trade name of products manufactured by Toho Chemical Co., Ltd.
- Hi-Filler No. 10 trade name of a product manufactured by Matsumura Sangyo Co., Ltd.
- Carplex #80 trade name of a product manufactured by Shionogi & Co., Ltd.
- 1/3,000 are (a) pots and 1/10,000 are (a) pots were filled with upland soil.
- Corn Zea mays) (variety: Royal Dent 105T) was sown in the 1/3,000 are pots, while velvetleaf (Abutilon theonhrasti), sicklepod (Cassia tora), common lambsquarters (Chenopodium album) and large crabgrass (Digitaria adscendens) were sown in the 1/10,000 are pots respectively.
- a predetermined amount of a herbicidal composition which was prepared in the form of a preparation as shown in Formulation Example 7 and diluted in 5 liters, per are (a), of water to prepare an aqueous solution to which an agricultural spreader was then added in an amount of 0.2% by volume based on the total, was foliarly applied to the plants with a small spray gun.
- the progress of growth of the plants was visually observed 30 days after the application to evaluate the degree of growth control according to 10 ratings (1: the same as in an untreated plot--10: perfect growth control). The results are shown in Table 3.
- 1/3,000 are (a) pots and 1/10,000 are (a) pots were filled with upland soil. Corn (variety: Royal Dent 105T) was sown in the 1/3,000 are pots, while velvetleaf, sicklepod and common lambsquarters were sown in the 1/10,000 are pots respectively.
- test plants reached respective given growth stage (a 4.2-leaf stage for corn, a 2.5-leaf stage for velvetleaf, a 1.2-leaf stage for sicklepod and a 2 to 4-leaf stage for common lambsquarters), a predetermined amount of a herbicidal composition which was diluted in 5 liters, per are (a), of water to prepare an aqueous solution to which an agricultural spreader was then added in an amount of 0.2% by volume based on the total, was foliarly applied to the plants with a small spray gun. The progress of growth of the plants was visually observed 26 days after the application to evaluate the degree of growth control according to 10 ratings (1: the same as in an untreated plot - 10: perfect growth control). The results are shown in Table 4.
- 1/1,500 are (a) pots were filled with upland soil. Corn (variety: Royal Dent 105T), cocklebur (Xanthium strumarium), morningglory (Ipomoea purpurea), prickly sida (Sida spinosa), Pigweed (Amaranthus retroflexus) and barnyard grass (Echinochloa crusgalli) were sown in the pots.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-199287 | 1987-08-10 | ||
JP19928787 | 1987-08-10 | ||
JP63-136043 | 1988-06-02 | ||
JP13604388 | 1988-06-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
USH670H true USH670H (en) | 1989-09-05 |
Family
ID=26469726
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/230,395 Abandoned USH670H (en) | 1987-08-10 | 1988-08-10 | Herbicidal composition |
Country Status (16)
Country | Link |
---|---|
US (1) | USH670H (ja) |
EP (2) | EP0303383B1 (ja) |
JP (1) | JP2696139B2 (ja) |
KR (1) | KR930002953B1 (ja) |
CN (1) | CN1022284C (ja) |
AU (1) | AU608637B2 (ja) |
BG (2) | BG48092A3 (ja) |
BR (1) | BR8803777A (ja) |
DE (1) | DE3888426T2 (ja) |
EG (1) | EG18676A (ja) |
ES (1) | ES2052727T3 (ja) |
HU (1) | HU205834B (ja) |
LV (1) | LV10019B (ja) |
MY (1) | MY103546A (ja) |
NZ (1) | NZ225473A (ja) |
TR (3) | TR28199A (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5407898A (en) * | 1987-11-27 | 1995-04-18 | Ciba-Geigy Corporation | Synergistic composition and method for the selective control of weeds |
US5698539A (en) * | 1992-05-30 | 1997-12-16 | Hoechst Aktiengesellschaft | Mixtures of herbicides and antidotes, (hetero)-aryloxy compounds, their preparation, compositions containing them, and their use |
US6849578B1 (en) | 1999-11-17 | 2005-02-01 | Bayer Aktiengesellschaft | Selective herbicides based on 2,6-disubstituted pyridine derivatives |
US20090264292A1 (en) * | 2005-09-28 | 2009-10-22 | Ishihara Sangyo Kaisha, Ltd. | Herbicidal composition |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5190576A (en) * | 1989-06-13 | 1993-03-02 | Rhone-Poulenc Agrochimie | Herbicidal combination based on bromoxynil or one of its derivatives |
FR2648014B1 (fr) * | 1989-06-13 | 1993-06-11 | Rhone Poulenc Agrochimie | Association herbicide a base de bromoxynil ou de l'un de ses derives a effet synergique |
DE3933543A1 (de) * | 1989-10-07 | 1991-04-11 | Hoechst Ag | Synergistische herbizide mittel |
US5116405A (en) * | 1989-11-06 | 1992-05-26 | Nissan Chemical Industries Ltd. | Pyridinesulfonamide derivatives and herbicides |
JPH04120006A (ja) * | 1990-08-23 | 1992-04-21 | Du Pont Japan Ltd | 水田用除草剤組成物 |
DE69216905T2 (de) * | 1991-05-03 | 1997-05-15 | Dowelanco | Herbizide Zusammensetzungen mit verbesserter Getreide-Sicherheit |
RO117587B1 (ro) * | 1991-07-12 | 2002-05-30 | Hoechst Ag | Compozitie erbicida, procedeu de obtinere a acesteia si metoda pentru controlul plantelor nedorite |
WO1994027438A1 (en) * | 1993-05-26 | 1994-12-08 | Sandoz Ltd. | Herbicidal compositions |
CN1056298C (zh) * | 1996-12-31 | 2000-09-13 | 佛山市中医院 | 一种治疗软组织损伤的外用药及其生产方法 |
AU708918B2 (en) * | 1997-01-28 | 1999-08-19 | Syngenta Participations Ag | Herbicidal synergistic composition and method of weed control |
AR048414A1 (es) * | 2004-02-26 | 2006-04-26 | Ishihara Sangyo Kaisha | Composicion herbicida |
EA012412B1 (ru) * | 2004-04-01 | 2009-10-30 | Басф Акциенгезельшафт | Гербицидные смеси синергического действия |
KR101280059B1 (ko) * | 2004-12-17 | 2013-06-28 | 주식회사 엘지생명과학 | 엔-[[(4,6-디메톡시-2-피리미디닐)아미노]카보닐]-2-[2-플루오로-1-(메톡시메틸 카보닐옥시)프로필]-3-피리딘설폰아미드를 함유하는 상승적 작용성의 제초제 조성물 |
CN102334494A (zh) * | 2011-06-20 | 2012-02-01 | 陕西韦尔奇作物保护有限公司 | 一种含烟嘧磺隆的除草组合物 |
GB2496643B (en) * | 2011-11-17 | 2016-08-17 | Rotam Agrochem Int Co Ltd | Herbicidal suspension concentrate |
AR089283A1 (es) | 2011-12-27 | 2014-08-13 | Ishihara Sangyo Kaisha | Composicion herbicida |
ES2700178T3 (es) | 2012-05-08 | 2019-02-14 | Ishihara Sangyo Kaisha | Composición herbicida |
CN103210943A (zh) * | 2013-04-27 | 2013-07-24 | 北京燕化永乐农药有限公司 | 除草组合物 |
CN104106584A (zh) * | 2014-01-26 | 2014-10-22 | 山东先达农化股份有限公司 | 一种玉米田复配除草剂组合物 |
CN105360137A (zh) * | 2015-10-09 | 2016-03-02 | 南宁源广农业科技有限公司 | 除草剂 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0232067A2 (en) | 1986-01-30 | 1987-08-12 | Ishihara Sangyo Kaisha Ltd. | Substituted pyridinesulfonamide compounds, herbicidal composition containing them, and method of preparing these compounds |
EP0237292A3 (en) | 1986-03-07 | 1988-05-18 | E.I. Du Pont De Nemours And Company | Herbicidal pyridine sulfonamides |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ZA871590B (en) * | 1986-03-07 | 1988-11-30 | Du Pont | Herbicidal pyridine sulfonamides |
JPH06278588A (ja) * | 1993-03-24 | 1994-10-04 | Aisin Seiki Co Ltd | 制動力制御装置 |
-
1988
- 1988-07-19 NZ NZ225473A patent/NZ225473A/xx unknown
- 1988-07-22 JP JP63181519A patent/JP2696139B2/ja not_active Expired - Lifetime
- 1988-07-27 HU HU884000A patent/HU205834B/hu unknown
- 1988-07-29 MY MYPI88000863A patent/MY103546A/en unknown
- 1988-07-29 BR BR8803777A patent/BR8803777A/pt not_active IP Right Cessation
- 1988-08-02 EP EP88307127A patent/EP0303383B1/en not_active Expired - Lifetime
- 1988-08-02 DE DE3888426T patent/DE3888426T2/de not_active Expired - Lifetime
- 1988-08-02 ES ES88307127T patent/ES2052727T3/es not_active Expired - Lifetime
- 1988-08-02 EP EP92112416A patent/EP0526796A2/en not_active Withdrawn
- 1988-08-04 AU AU20498/88A patent/AU608637B2/en not_active Expired
- 1988-08-09 EG EG433/88A patent/EG18676A/xx active
- 1988-08-09 BG BG085185A patent/BG48092A3/xx unknown
- 1988-08-09 TR TR00680/90A patent/TR28199A/xx unknown
- 1988-08-09 CN CN88104874A patent/CN1022284C/zh not_active Expired - Lifetime
- 1988-08-09 KR KR1019880010136A patent/KR930002953B1/ko not_active IP Right Cessation
- 1988-08-09 TR TR00592/88A patent/TR28216A/xx unknown
- 1988-08-09 BG BG086838A patent/BG49812A3/xx unknown
- 1988-08-09 TR TR00681/90A patent/TR28196A/xx unknown
- 1988-08-10 US US07/230,395 patent/USH670H/en not_active Abandoned
-
1992
- 1992-11-27 LV LVP-92-220A patent/LV10019B/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0232067A2 (en) | 1986-01-30 | 1987-08-12 | Ishihara Sangyo Kaisha Ltd. | Substituted pyridinesulfonamide compounds, herbicidal composition containing them, and method of preparing these compounds |
EP0237292A3 (en) | 1986-03-07 | 1988-05-18 | E.I. Du Pont De Nemours And Company | Herbicidal pyridine sulfonamides |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5407898A (en) * | 1987-11-27 | 1995-04-18 | Ciba-Geigy Corporation | Synergistic composition and method for the selective control of weeds |
US5698539A (en) * | 1992-05-30 | 1997-12-16 | Hoechst Aktiengesellschaft | Mixtures of herbicides and antidotes, (hetero)-aryloxy compounds, their preparation, compositions containing them, and their use |
US6849578B1 (en) | 1999-11-17 | 2005-02-01 | Bayer Aktiengesellschaft | Selective herbicides based on 2,6-disubstituted pyridine derivatives |
US20090264292A1 (en) * | 2005-09-28 | 2009-10-22 | Ishihara Sangyo Kaisha, Ltd. | Herbicidal composition |
Also Published As
Publication number | Publication date |
---|---|
TR28199A (tr) | 1996-02-13 |
AU2049888A (en) | 1989-02-16 |
ES2052727T3 (es) | 1994-07-16 |
TR28216A (tr) | 1996-03-01 |
JP2696139B2 (ja) | 1998-01-14 |
LV10019A (lv) | 1994-05-10 |
BR8803777A (pt) | 1989-02-21 |
EP0526796A3 (ja) | 1994-01-26 |
BG48092A3 (en) | 1990-11-15 |
AU608637B2 (en) | 1991-04-11 |
EP0303383B1 (en) | 1994-03-16 |
EG18676A (en) | 1993-10-30 |
TR28196A (tr) | 1996-04-17 |
JPH0276803A (ja) | 1990-03-16 |
HUT49459A (en) | 1989-10-30 |
KR890003285A (ko) | 1989-04-14 |
EP0303383A2 (en) | 1989-02-15 |
MY103546A (en) | 1993-07-31 |
HU205834B (en) | 1992-07-28 |
NZ225473A (en) | 1990-02-26 |
CN1022284C (zh) | 1993-10-06 |
DE3888426T2 (de) | 1994-06-23 |
LV10019B (en) | 1995-06-20 |
BG49812A3 (en) | 1992-02-14 |
EP0526796A2 (en) | 1993-02-10 |
KR930002953B1 (ko) | 1993-04-16 |
DE3888426D1 (de) | 1994-04-21 |
CN1031174A (zh) | 1989-02-22 |
EP0303383A3 (en) | 1991-01-16 |
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