Cigarette
Patent 5131416 Issued on July 21, 1992. Estimated Expiration Date: 
December 17, 2010. 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.
December 17, 2010. 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 3395714 3633589 3744496 3902504 Gamma alumina filled paper wrapper for smoking articles Power valve Wrapper for smoking articles containing magnesium oxide Smoking articles Wrapper for smoking articles and method Wrapper for smoking articles and method InventorAssigneeApplicationNo. 628545 filed on 12/17/1990US Classes:131/365, Wrapper or binder131/331, SMOKE SEPARATOR OR TREATER131/335, By adding constituent to smoke stream131/336AirExaminersPrimary: Millin, V.Assistant: Reichard, Lynne A. Foreign Patent References
International ClassA24D 001/02AbstractA cigarette includes a charge or roll of smokable material (e.g., tobacco cut filler) circumscribed by two layers of paper wrapping materials. The first or inner wrapping material includes a cellulosic base web, tobacco, and magnesium oxide and/or magnesium hydroxide within the web. The second or outer wrapping material circumscribes and overwraps the first wrapping material, has a cellulosic base web and inorganic filler material, and exhibits an air permeability of below about 8 CORESTA units. The cigarette is capable of sustaining smolder under FTC smoking conditions while yielding very low levels of visible sidestream smoke. | |
