Combustible carbon filter and smoking product
November 13, 2001. 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 2987686 Synthetic smoking product Synthetic smoking product Process for the manufacture of synthetic smoking materials Smoking product having core of fibrillar carbonized matter Smokable material containing thermally degraded tobacco by-products and its method of preparation Smokable material and its method of preparation Smoking materials Patent #: 4286604 InventorsApplicationNo. 06/296233 filed on 08/25/1981US Classes:131/331, SMOKE SEPARATOR OR TREATER131/334, By chemical reaction, e.g., ion-exchange, chelating, catalytic, etc.131/359, Tobacco substitute, i.e., nontobacco131/364, Blank or filler131/369METHOD OR APPARATUS FOR MAKING TOBACCO SUBSTITUTEExaminersPrimary: Millin, V.Attorney, Agent or FirmInternational ClassesA24D 3/00 (20060101)A24D 3/02 (20060101) A24D 3/10 (20060101) A24F 47/00 (20060101) AbstractThe present invention provides a method according to which a cellulose rod, at least 11 mm in diameter and formed from cellulosic paper made by the wet paper-making process, that has been treated with a binding agent, repeatedly folded along its longitudinal axis and passed through a heated forming die to provide a coherent rod, is treated with an additive and then pyrolyzed by being advanced through a die maintained at a temperature within the range of from about 500° C. to about 1000° C. in an oxygen-free atmosphere for a total retention time in the die of from about 3 seconds to about 1 minute. The pyrolyzed cellulose rod is then cooled to less than about 250° C. before being removed from the oxygen-free atmosphere. The resulting combustible carbonized rod may be cut to suitable lengths and employed as a filter in tobacco-containing cigarettes or may be used to form a tobacco-free cigarette.Field of SearchSMOKE SEPARATOR OR TREATERBy use of specific filter mass Plural diverse elements Including particulate material Plasticizer or adhesive coating Occupying plural, separate, distinct zones Including a cellulose ester or ether Tobacco substitute, i.e., nontobacco METHOD OR APPARATUS FOR MAKING TOBACCO SUBSTITUTE By chemical reaction, e.g., ion-exchange, chelating, catalytic, etc. Blank or filler | |
