Smoking article wrapper and method of making same
Patent 4881557 Issued on November 21, 1989. Estimated Expiration Date: 
April 20, 2008. 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.
April 20, 2008. 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 ReferencesWrapper for smoking articles containing magnesium oxide Wrapper for smoking articles and method Wrapper for smoking articles and method Wrapper for smoking articles and method Patent #: 4450847 InventorAssigneeApplicationNo. 183979 filed on 04/20/1988US Classes:131/365Wrapper or binderExaminersPrimary: Millin, V.Attorney, Agent or FirmInternational ClassA24D 001/02AbstractA cigarette paper which when fabricated into a cigarette with a suitable tobacco column produces up to 80% less particulate sidestream smoke than do cigarettes fabricated with conventional cigarette paper wrappers. This reduction of sidestream smoke is accomplished by incorporation of a mixture of freshly precipitated and particulate magnesium hydroxides in the cigarette paper sheet as paper fillers. The high percentage reductions in sidestream particulate smoke are obtained when the median particle size of the particulate magnesium hydroxide filler is relatively large, e.g., 15 micrometers. | |
