Cigarettes
Patent 4481960 Issued on November 13, 1984. Estimated Expiration Date: 
July 27, 2002. 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.
July 27, 2002. 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 ReferencesCigarettes High porosity carbon coated cigarette papers Patent #: 4225636 InventorAssigneeApplicationNo. 06/402252 filed on 07/27/1982US Classes:131/336, Air131/360, Cigar or cigarette131/365Wrapper or binderExaminersPrimary: Millin, V.Attorney, Agent or FirmInternational ClassesA24D 1/02 (20060101)A24D 1/00 (20060101) Foreign Application Priority Data1981-08-05 GBAbstractA smoking article which comprises a rod of smoking material contained within a wrapper has an air-permeability in a range of from 20 to about 120 Coresta units and is provided in the region of the mouth end, with ventilation means to give a degree of ventilation of 15 to 90%, the ratio of carbon-monoxide yield to tar yield of the smoking article being significantly less than 0.9. If the article has a tip means, the ventilation means may be provided, at least partially, in the tip means. The smoking material may include a high proportion of lamina-leaf tobacco having a relatively high nicotine content. Tobacco in the smoking material, possibly including stem tobacco, is coarsely cut or shredded. The smoking material may include up to 60% of expanded tobacco. The wrapper may contain an addition of a burn-promoting agent. | |
