UST901024I4 - Defensive publication - Google Patents
Defensive publication Download PDFInfo
- Publication number
- UST901024I4 UST901024I4 US901024DH UST901024I4 US T901024 I4 UST901024 I4 US T901024I4 US 901024D H US901024D H US 901024DH US T901024 I4 UST901024 I4 US T901024I4
- Authority
- US
- United States
- Prior art keywords
- filter
- oxides
- additive
- smoke
- granules
- 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.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
Definitions
- Tobacco smoke filter containing an additive of mixed metal oxides such as hopcalite for the selective removal of oxides of nitrogen (NO and N0 from tobacco smoke.
- the metal oxides may be primarily the oxides of manganese and copper, with small amounts of the oxides of chromium, iron, silver, cobalt, zinc, palladium and cadmium.
- the filter additives may be employed as granules of the metal oxide mixture, or as powders and they may be impregnated on a solid support such as alumina. The granules should have a surface area of 25 to 500 m. g.
- the additive may be applied to filtering material such as cellulose acetate tow or as one component of a multicomponent filter. Further, the filter may be vented to allow from 10 to 40% dilution of the smoke and should be designed so that air entering the filter through the vents does not enter the smoke stream in front of the chamber containing the filter additive.
- the venting is conveniently achieved with an inner chamber which channels fresh air around the periphery of the filter and into the smokers mouth.
Abstract
TOBACCO SMOKE FILTER CONTAINING AN ADDITIVE OR MIXED METAL OXIDES SUCH AS HOPCALITE FOR THE SELECTIVE REMOVAL OF OXIDES OF NITROGEN (NO AND NO2) FROM TOBACCO SMOKE. THE METAL OXIDES MAY BE PRIMARILY THE OXIDES OF MANGANESE AND COPPER, WITH SMALL AMOUNTS OF THE OXIDES OF CHROMIUM, IRON, SILVER, COBALT, ZINC, PALLADIUM AND CADMIUM. THE FILTER ADDITIVES MAY BE EMPLOYED AS GRANULES OF THE METAL OXIDE MIXTURE, OR AS POWDERS AND THEY MAY BE IMPREGNATED ON A SOLID SUPPORT SUCH AS ALUMINA. THE GRANULES SHOULD HAVE A SURFACE AREA OF 25 TO 500 M2/G. AND PORES WITH DIAMETERS RANGING FROM 5 A TO 100 A. THE ADDITIVE MAY BE APPLIED TO FILTERING MATERIAL SUCH AS CELLULOSE ACETATE TOW OR AS ONE COMPONENT OF A MULTICOMPONTENT FILTER. FURTHER, THE FILTER MAY BE VENTED TO ALLOW FROM 10 TO 40% DILUTION OF THE SMOKE AND SHOULD BE DESIGNED SO THAT AIR ENTERING THE FILTER THROUGH THE VENTS DOES NOT ENTER THE SMOKE STREAM IN FRONT OF THE CHAMBER CONTAINING THE FILTER ADDITIVE. THE VENTING IS CONVENIENTLY ACHIEVED WITH AN INNER CHAMBER WHICH CHANNELS FRESH AIR AROUND THE PERIPHERY OF THE FILTER AND INTO THE SMOKER''S MOUTH.
Description
DEFENSIVE PUEMCATION -UNITEI) STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 0.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.
Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Ofice makes no assertion as to the novelty of the disclosed subject matter.
PUBLISHED AUGUST 8, 1972 T901,024 VENTED TOBACCO SMOKE FILTER CONTAINING METAL OXIDES Cephas H. Sloan, Rte. 5 37460, and Gerald E. Morie,
2317 Briarclitf Road 37660, both of Kingsport, Tenn.
Filed Sept. 27, 1971, Ser. No. 184,195 Int. Cl. A24d 1/04 US. Cl. 131-266 No Drawing. 6 Pages Specification Tobacco smoke filter containing an additive of mixed metal oxides such as hopcalite for the selective removal of oxides of nitrogen (NO and N0 from tobacco smoke. The metal oxides may be primarily the oxides of manganese and copper, with small amounts of the oxides of chromium, iron, silver, cobalt, zinc, palladium and cadmium. The filter additives may be employed as granules of the metal oxide mixture, or as powders and they may be impregnated on a solid support such as alumina. The granules should have a surface area of 25 to 500 m. g. and pores with diameters ranging from 5 A. to 100 A. The additive may be applied to filtering material such as cellulose acetate tow or as one component of a multicomponent filter. Further, the filter may be vented to allow from 10 to 40% dilution of the smoke and should be designed so that air entering the filter through the vents does not enter the smoke stream in front of the chamber containing the filter additive. The venting is conveniently achieved with an inner chamber which channels fresh air around the periphery of the filter and into the smokers mouth.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18419571A | 1971-09-27 | 1971-09-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
UST901024I4 true UST901024I4 (en) | 1972-08-08 |
Family
ID=22675920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US901024D Pending UST901024I4 (en) | 1971-09-27 | 1971-09-27 | Defensive publication |
Country Status (1)
Country | Link |
---|---|
US (1) | UST901024I4 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4363333A (en) | 1979-11-13 | 1982-12-14 | British-American Tobacco Company Limited | Tobacco-smoke filters |
US4517995A (en) | 1981-10-23 | 1985-05-21 | Lyles Mark B | Filters for polynuclear aromatic hydrocarbon-containing smoke |
US4662384A (en) | 1982-06-29 | 1987-05-05 | British-American Tobacco Company Limited | Smoking articles |
US4827950A (en) | 1986-07-28 | 1989-05-09 | R. J. Reynolds Tobacco Company | Method for modifying a substrate material for use with smoking articles and product produced thereby |
-
1971
- 1971-09-27 US US901024D patent/UST901024I4/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4363333A (en) | 1979-11-13 | 1982-12-14 | British-American Tobacco Company Limited | Tobacco-smoke filters |
US4517995A (en) | 1981-10-23 | 1985-05-21 | Lyles Mark B | Filters for polynuclear aromatic hydrocarbon-containing smoke |
US4662384A (en) | 1982-06-29 | 1987-05-05 | British-American Tobacco Company Limited | Smoking articles |
US4827950A (en) | 1986-07-28 | 1989-05-09 | R. J. Reynolds Tobacco Company | Method for modifying a substrate material for use with smoking articles and product produced thereby |
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