Smoking products
Patent 4317460 Issued on March 2, 1982. Estimated Expiration Date: 
March 2, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 2, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References T901024 3355317 3368566 3472237 3790662 Tobacco composition Patent #: 4055191 InventorsAssigneeApplicationNo. 06/004215 filed on 01/17/1979US Classes:131/334, By chemical reaction, e.g., ion-exchange, chelating, catalytic, etc.423/247Utilizing solid sorbent, catalyst, or reactantExaminersPrimary: Millin, V.Attorney, Agent or FirmInternational ClassesA24D 3/00 (20060101)A24D 3/16 (20060101) Foreign Application Priority Data1978-01-20 GBAbstractCatalysts for the low temperature oxidation of carbon monoxide to carbon dioxide, used in smoking product filters, are described. The catalysts are carried upon a support which should be microporous. The catalysts may include mixtures of tin or tin compounds with other catalytic material. The catalysts may involve a Redox mechanism. The catalysts exhibit resistance to deactivation caused by contact with water.Other References
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