GB1440464A - Multilayer analytical elements - Google Patents
Multilayer analytical elementsInfo
- Publication number
- GB1440464A GB1440464A GB3142473A GB3142473A GB1440464A GB 1440464 A GB1440464 A GB 1440464A GB 3142473 A GB3142473 A GB 3142473A GB 3142473 A GB3142473 A GB 3142473A GB 1440464 A GB1440464 A GB 1440464A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reagent
- containing layer
- layer
- thickness
- microns
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/52—Use of compounds or compositions for colorimetric, spectrophotometric or fluorometric investigation, e.g. use of reagent paper and including single- and multilayer analytical elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B23/00—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose
- B32B23/04—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/52—Use of compounds or compositions for colorimetric, spectrophotometric or fluorometric investigation, e.g. use of reagent paper and including single- and multilayer analytical elements
- G01N33/525—Multi-layer analytical elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/402—Coloured
- B32B2307/4026—Coloured within the layer by addition of a colorant, e.g. pigments, dyes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/412—Transparent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/416—Reflective
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2317/00—Animal or vegetable based
- B32B2317/18—Cellulose, modified cellulose or cellulose derivatives, e.g. viscose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hematology (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Chemical & Material Sciences (AREA)
- Urology & Nephrology (AREA)
- Food Science & Technology (AREA)
- Biochemistry (AREA)
- Cell Biology (AREA)
- Biotechnology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Microbiology (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
1440464 Laminates EASTMAN KODAK CO 2 July 1973 [30 June 1972] 31424/73 Heading B5N [Also in Division G1] A multilayer analytical element comprises a liquid-impermeable, light-transmitting support carrying at least one analytical reagent-containing layer on one of its surfaces and laminated to the reagent-containing layer a layer of cellulose acetate nitrate microporous membrane material having a thickness of 180 microns and an average pore size of 1À2 microns. The support may be a 0À004 or 0À007 inch thickness poly- (ethylene terephthalate) film or a 0À010 inch thickness cellulose triacetate film; polycarbonate supports and a thickness range of 0À002 to 0À010 inches are mentioned. The analytical reagent-containing layer may comprise gelatin, polyvinyl alcohol, a copolymer of acrylic acid and 2-acetoacetoxy ethyl methacrylate or cyanose. The laminate may be made by steaming the reagent-containing layer for several seconds to soften it, then pressing the membrane material layer into contact with the reagent-containing layer and rolling under light pressure to effect bonding.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US26784972A | 1972-06-30 | 1972-06-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1440464A true GB1440464A (en) | 1976-06-23 |
Family
ID=23020386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3142473A Expired GB1440464A (en) | 1972-06-30 | 1973-07-02 | Multilayer analytical elements |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS5321677B2 (en) |
BE (1) | BE801742A (en) |
CA (1) | CA1015253A (en) |
CH (1) | CH578425A5 (en) |
DE (1) | DE2332760C3 (en) |
FR (1) | FR2191734A5 (en) |
GB (1) | GB1440464A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3222366A1 (en) * | 1981-06-17 | 1982-12-30 | Fuji Photo Film Co., Ltd., Minami-Ashigara, Kanagawa | ANALYSIS MATERIALS FOR GLUCOSEOXIDASE ENZYME REACTION SYSTEMS IN LIQUID SAMPLES |
EP0103288A1 (en) | 1982-09-10 | 1984-03-21 | Fuji Photo Film Co., Ltd. | Multilayer analytical element |
US4895704A (en) * | 1985-04-23 | 1990-01-23 | Fuji Photo Film Co., Ltd. | Integral multilayer analytical element |
AU600657B2 (en) * | 1984-12-15 | 1990-08-23 | Dade Behring Marburg Gmbh | Sheet-like diagnostic device |
EP0510195A1 (en) * | 1989-12-25 | 1992-10-28 | Daiki Co., Ltd | Sheet, seat, bag, article of daily use, ink and packaging material for animal |
US5681529A (en) * | 1994-08-25 | 1997-10-28 | Nihon Medi-Physics Co., Ltd. | Biological fluid analyzing device |
US6268162B1 (en) | 1986-08-13 | 2001-07-31 | Lifescan, Inc. | Reflectance measurement of analyte concentration with automatic initiation of timing |
WO2001069237A1 (en) * | 2000-03-15 | 2001-09-20 | Arkray, Inc. | Specimen having capability of separating solid component |
US6699722B2 (en) | 2000-04-14 | 2004-03-02 | A-Fem Medical Corporation | Positive detection lateral-flow apparatus and method for small and large analytes |
CN101862564A (en) * | 2010-03-16 | 2010-10-20 | 苏州市玮琪生物科技有限公司 | Micro-blood sample pretreatment system and preparation process thereof |
Families Citing this family (56)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1056282A (en) * | 1974-03-25 | 1979-06-12 | Charles T. Goodhue | Multilayer analytical elements for use in the assay of cholesterol |
US3884764A (en) * | 1974-03-25 | 1975-05-20 | Eastman Kodak Co | Method and composition for blood serum cholesterol analysis |
FR2280081A1 (en) * | 1974-07-23 | 1976-02-20 | Kodak Pathe | UNIT COMPOSITE PRODUCT FOR CHEMICAL OR BIOLOGICAL ANALYSIS |
DE2559090C2 (en) * | 1975-01-08 | 1986-01-09 | Eastman Kodak Co., Rochester, N.Y. | Dosing device for repeated dispensing of a measured amount of liquid in the form of drops |
DE2626367C2 (en) * | 1975-06-20 | 1982-04-22 | Eastman Kodak Co., 14650 Rochester, N.Y. | Analytical material for the analytical determination of a substance in a liquid sample |
JPS5185791A (en) * | 1975-08-14 | 1976-07-27 | Wako Pure Chem Ind Ltd | SHINDANYOSHIKENHEN |
US4050898A (en) * | 1976-04-26 | 1977-09-27 | Eastman Kodak Company | Integral analytical element |
US4057394A (en) * | 1976-05-24 | 1977-11-08 | Miles Laboratories, Inc. | Test device and method for determining blood hemoglobin |
DE2636244A1 (en) * | 1976-08-12 | 1978-02-16 | Knoll Ag | TEST STRIP |
CA1114269A (en) * | 1976-08-19 | 1981-12-15 | Charles D. Warburton | Integral element for the detection of glycerol or triglycerides |
US4160696A (en) * | 1976-08-23 | 1979-07-10 | Eastman Kodak Company | Ascorbic acid determination |
US4046514A (en) * | 1976-11-24 | 1977-09-06 | Miles Laboratories, Inc. | Test device and method for determining a component in a sample |
CA1095819A (en) * | 1977-01-14 | 1981-02-17 | Eastman Kodak Company | Element for analysis of liquids |
US4098574A (en) * | 1977-08-01 | 1978-07-04 | Eastman Kodak Company | Glucose detection system free from fluoride-ion interference |
JPS5461986A (en) * | 1977-10-27 | 1979-05-18 | Toyo Roshi Kaisha | Substance and test piece for detecting chlorine in milk* and method of making said substance and test piece |
US4178153A (en) * | 1977-11-21 | 1979-12-11 | Damon Corporation | Method and apparatus for chemical spot test analysis |
NL184440C (en) * | 1978-05-17 | 1989-07-17 | Battelle Memorial Institute | TEST SAMPLE FOR ANALYZING Dissolved Substances. |
US4260392A (en) * | 1978-07-07 | 1981-04-07 | Technicon Instruments Corporation | Method and apparatus for obtaining an aliquot of a liquid in a gel medium |
US4250257A (en) * | 1978-08-24 | 1981-02-10 | Technicon Instruments Corporation | Whole blood analyses in porous media |
JPS5530605A (en) * | 1978-08-25 | 1980-03-04 | Dainichi Seika Kogyo Kk | Oxygen detective sheet material |
JPS5533651A (en) * | 1978-08-31 | 1980-03-08 | Fuji Photo Film Co Ltd | Laminated plate of multi-layered chemical analysis material and using method thereof |
JPH0142041Y2 (en) * | 1978-12-11 | 1989-12-11 | ||
US4288228A (en) * | 1979-01-31 | 1981-09-08 | Technicon Instruments Corporation | Whole blood analyses and diffusion apparatus therefor |
DE2910134A1 (en) * | 1979-03-15 | 1980-09-25 | Boehringer Mannheim Gmbh | DIAGNOSTIC AGENT FOR DETECTING COMPONENTS OF BODY LIQUIDS |
JPS55164356A (en) * | 1979-06-08 | 1980-12-22 | Fuji Photo Film Co Ltd | Multi-layer analysis sheet for liquid sample analysis |
JPS568549A (en) * | 1979-07-02 | 1981-01-28 | Fuji Photo Film Co Ltd | Multilayer chemical analyzing material |
JPS5624576A (en) * | 1979-08-04 | 1981-03-09 | Konishiroku Photo Ind Co Ltd | Multilayer analyzing element |
JPS5697872A (en) * | 1980-01-07 | 1981-08-06 | Fuji Photo Film Co Ltd | Measuring material for concentration of hemoglobin in blood |
JPS5766359A (en) * | 1980-10-09 | 1982-04-22 | Fuji Photo Film Co Ltd | Sheet-like material for analysis |
DE3118381A1 (en) * | 1981-05-09 | 1982-11-25 | Boehringer Mannheim Gmbh, 6800 Mannheim | MULTILAYER TEST MEANS FOR DETECTING A COMPONENT OF A LIQUID SAMPLE |
DE3332144A1 (en) * | 1982-09-06 | 1984-03-08 | Konishiroku Photo Industry Co., Ltd., Tokyo | Analytical element |
JPS6014141A (en) * | 1983-07-06 | 1985-01-24 | Kyoto Daiichi Kagaku:Kk | Monolithically multilayered analyzing implement |
US4522786A (en) * | 1983-08-10 | 1985-06-11 | E. I. Du Pont De Nemours And Company | Multilayered test device for detecting analytes in liquid test samples |
DE3407359A1 (en) * | 1984-02-29 | 1985-08-29 | Bayer Ag, 5090 Leverkusen | TEST DEVICE AND METHOD FOR DETECTING A COMPONENT OF A LIQUID SAMPLE |
JPS614959A (en) * | 1984-06-19 | 1986-01-10 | Fuji Photo Film Co Ltd | Monolithic type multi-layered analyzing element |
DE3508427A1 (en) * | 1985-03-09 | 1986-09-11 | Merck Patent Gmbh, 6100 Darmstadt | AGENT AND METHOD FOR SEPARATING PLASMA OR SERUM FROM WHOLE BLOOD |
JPH0521013Y2 (en) * | 1985-03-28 | 1993-05-31 | ||
JPH0521014Y2 (en) * | 1985-03-28 | 1993-05-31 | ||
US4889797A (en) * | 1986-05-28 | 1989-12-26 | Fuji Photo Film Co., Ltd. | Dry analytical element having a spread control area for assaying enzyme activity |
CA2142868C (en) * | 1992-08-21 | 2001-07-24 | Yuichi Kinoshita | Chemical and microbiological test kit |
JP3177920B2 (en) * | 1993-07-16 | 2001-06-18 | 富士写真フイルム株式会社 | Dry analysis film pieces |
FI109730B (en) * | 1998-06-18 | 2002-09-30 | Janesko Oy | Arrangement for measurement of pH or other chemical property detectable by dye indicators |
US6562625B2 (en) | 2001-02-28 | 2003-05-13 | Home Diagnostics, Inc. | Distinguishing test types through spectral analysis |
US6525330B2 (en) | 2001-02-28 | 2003-02-25 | Home Diagnostics, Inc. | Method of strip insertion detection |
US6541266B2 (en) | 2001-02-28 | 2003-04-01 | Home Diagnostics, Inc. | Method for determining concentration of an analyte in a test strip |
WO2006080329A1 (en) * | 2005-01-26 | 2006-08-03 | Fujifilm Corporation | Multilayer analysis element |
WO2006092980A1 (en) | 2005-02-28 | 2006-09-08 | Fujifilm Corporation | Dry analysis element |
DK1982182T3 (en) | 2006-01-19 | 2012-05-14 | Lattec I S | HIS UNKNOWN DRY-STICK DEVICE CONSTRUCTION AND PROCEDURE FOR DETERMINING AN ANALYST IN A SAMPLE WHEN USING THIS DRY-STICK DEVICE |
EP1947191B1 (en) | 2007-01-17 | 2010-11-03 | FUJIFILM Corporation | Method for measuring animal alpha-amylase |
US20090093007A1 (en) | 2007-05-16 | 2009-04-09 | Shigeki Kageyama | Method for producing dry analytical element for pancreatic lipase measurement |
JP2008306942A (en) | 2007-06-12 | 2008-12-25 | Fujifilm Corp | Dry analysis element for measuring lipase |
JP5081680B2 (en) | 2008-03-25 | 2012-11-28 | 富士フイルム株式会社 | Dry analytical element for lipase measurement |
JP5331531B2 (en) | 2008-03-25 | 2013-10-30 | 富士フイルム株式会社 | Dry analytical element for lipase measurement |
JP5265257B2 (en) | 2008-06-30 | 2013-08-14 | 富士フイルム株式会社 | Antibodies that recognize dog CRP and human CRP |
JP5292270B2 (en) | 2009-12-21 | 2013-09-18 | 富士フイルム株式会社 | Dry analytical element for dog CRP measurement |
US9664672B2 (en) * | 2015-02-28 | 2017-05-30 | Rongbin ZENG | Dry chemical test strip with multiple layers of membranes based on concentration gradient |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3260413A (en) * | 1964-08-31 | 1966-07-12 | Scientific Industries | Automatic chemical analyzer |
US3526480A (en) * | 1966-12-15 | 1970-09-01 | Xerox Corp | Automated chemical analyzer |
US3553067A (en) * | 1968-03-25 | 1971-01-05 | Millipore Corp | Laminated sheet for evaluating diffusive reactions |
US3663374A (en) * | 1970-08-14 | 1972-05-16 | Geomet | Method and apparatus for quantitating enzyme activity |
-
1973
- 1973-06-27 DE DE2332760A patent/DE2332760C3/en not_active Expired
- 1973-06-28 FR FR7323599A patent/FR2191734A5/fr not_active Expired
- 1973-06-29 BE BE132982A patent/BE801742A/en not_active IP Right Cessation
- 1973-06-29 CA CA175,268A patent/CA1015253A/en not_active Expired
- 1973-06-29 CH CH951973A patent/CH578425A5/xx not_active IP Right Cessation
- 1973-06-30 JP JP7431873A patent/JPS5321677B2/ja not_active Expired
- 1973-07-02 GB GB3142473A patent/GB1440464A/en not_active Expired
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3222366A1 (en) * | 1981-06-17 | 1982-12-30 | Fuji Photo Film Co., Ltd., Minami-Ashigara, Kanagawa | ANALYSIS MATERIALS FOR GLUCOSEOXIDASE ENZYME REACTION SYSTEMS IN LIQUID SAMPLES |
EP0103288A1 (en) | 1982-09-10 | 1984-03-21 | Fuji Photo Film Co., Ltd. | Multilayer analytical element |
AU600657B2 (en) * | 1984-12-15 | 1990-08-23 | Dade Behring Marburg Gmbh | Sheet-like diagnostic device |
USRE38688E1 (en) | 1984-12-15 | 2005-01-18 | Dade Behring Marburg Gmbh | Sheet-like diagnostic device |
USRE37437E1 (en) | 1984-12-15 | 2001-11-06 | Dade Behring Marburg, Gmbh | Sheet-like diagnostic device |
US4895704A (en) * | 1985-04-23 | 1990-01-23 | Fuji Photo Film Co., Ltd. | Integral multilayer analytical element |
EP0200142B1 (en) * | 1985-04-23 | 1991-12-18 | Fuji Photo Film Co., Ltd. | Integral multilayer analytical element |
US6268162B1 (en) | 1986-08-13 | 2001-07-31 | Lifescan, Inc. | Reflectance measurement of analyte concentration with automatic initiation of timing |
US6489133B2 (en) | 1986-08-13 | 2002-12-03 | Lifescan, Inc. | Apparatus for determinating the concentration of glucose in whole blood |
US6821483B2 (en) | 1986-08-13 | 2004-11-23 | Lifescan, Inc. | Reagents test strip with alignment notch |
EP0510195A4 (en) * | 1989-12-25 | 1993-01-20 | Daiki Co., Ltd | Sheet, seat, bag, article of daily use, ink and packaging material for animal |
EP0510195A1 (en) * | 1989-12-25 | 1992-10-28 | Daiki Co., Ltd | Sheet, seat, bag, article of daily use, ink and packaging material for animal |
US5681529A (en) * | 1994-08-25 | 1997-10-28 | Nihon Medi-Physics Co., Ltd. | Biological fluid analyzing device |
WO2001069237A1 (en) * | 2000-03-15 | 2001-09-20 | Arkray, Inc. | Specimen having capability of separating solid component |
EP1271143A1 (en) * | 2000-03-15 | 2003-01-02 | ARKRAY, Inc. | Specimen having capability of separating solid component |
US7201871B2 (en) | 2000-03-15 | 2007-04-10 | Arkray Inc. | Specimen having capability of separating solid component |
EP1271143A4 (en) * | 2000-03-15 | 2007-04-18 | Arkray Inc | Specimen having capability of separating solid component |
US6699722B2 (en) | 2000-04-14 | 2004-03-02 | A-Fem Medical Corporation | Positive detection lateral-flow apparatus and method for small and large analytes |
CN101862564A (en) * | 2010-03-16 | 2010-10-20 | 苏州市玮琪生物科技有限公司 | Micro-blood sample pretreatment system and preparation process thereof |
Also Published As
Publication number | Publication date |
---|---|
DE2332760A1 (en) | 1974-01-17 |
DE2332760C3 (en) | 1982-03-04 |
FR2191734A5 (en) | 1974-02-01 |
JPS4953888A (en) | 1974-05-25 |
DE2332760B2 (en) | 1977-06-02 |
CA1015253A (en) | 1977-08-09 |
CH578425A5 (en) | 1976-08-13 |
JPS5321677B2 (en) | 1978-07-04 |
BE801742A (en) | 1974-01-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 19930701 |