Synthetic smoking product
Patent 3943941 Issued on March 16, 1976. Estimated Expiration Date: 
March 16, 1993. 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 16, 1993. 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 2907686 3545448 3738374 InventorsAssigneeApplicationNo. 352238 filed on 04/18/1973US Classes:131/359Tobacco substitute, i.e., nontobaccoExaminersPrimary: Michell, Robert W.Assistant: Millin, V. Attorney, Agent or FirmForeign Application Priority Data1972-04-20 UKAbstractA tobacco substitute which consists essentially of a complete fuel and at least one volatile substance impregnating said fuel, said volatile substance being capable of distilling or subliming without chemical change, and said fuel consisting essentially of combustible, flexible and self coherent fibrers made of a carbonaceous material containing at least 80 percent carbon by weight, which material is the product of the controlled pyrolysis of a cellulose based fibre containing only carbon, hydrogen and oxygen, and which has suffered a weight loss of at least 60 percent during the pyrolysis, the fibres produced in the pyrolysis having a cross-sectional dimension between 5 and 50 microns, and a length between 1 mm and 5 cm, and being agglomerated into a plurality of strands, which strands have a cross-sectional dimension between 0.1 mm and 5mm and a length of between 5 mm and 5 cm. | |
