Tobacco composition
Patent 4248251 Issued on February 3, 1981. Estimated Expiration Date: 
February 21, 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.
February 21, 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 2902998 3474792 3572348 InventorsAssigneeApplicationNo. 06/013576 filed on 02/21/1979US Classes:131/334, By chemical reaction, e.g., ion-exchange, chelating, catalytic, etc.131/331, SMOKE SEPARATOR OR TREATER131/341Plural diverse elementsExaminersPrimary: Millin, V.Attorney, Agent or FirmInternational ClassesA24B 15/28 (20060101)A24B 15/00 (20060101) AbstractThe concentration of polycyclic aromatic hydrocarbons in tobacco smoke is reduced by incorporating palladium, either in metallic form or as a salt, and an inorganic nitric oxide generating compound into tobacco.Other References
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