Wrapper for smoking article, smoking article, and method of making same
Patent 5121759 Issued on June 16, 1992. Estimated Expiration Date: 
March 29, 2011. 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 29, 2011. 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 3744496 3831609 3834398 3908671 Thermoplastic cigarette wrapper Wrapper for smoking articles containing magnesium oxide Wrapper for smoking articles and method Treatment of cigarette paper Method and smoking article wrapper for reducing sidestream smoke Sidestream reducing cigarette paper InventorsAssigneeApplicationNo. 677447 filed on 03/29/1991US Classes:131/365, Wrapper or binder131/334, By chemical reaction, e.g., ion-exchange, chelating, catalytic, etc.131/359Tobacco substitute, i.e., nontobaccoExaminersPrimary: Millin, V.Assistant: Reichard, Lynne A. Attorney, Agent or FirmInternational ClassA24D 001/02AbstractA wrapper for a smoking article which, when wrapped about a tobacco column, provides improved sidestream smoke reduction, improved ash formation, and acceptable mainstream smoke taste and sidestream smoke odor subjectives. These objectives are attained by forming a single cellulosic sheet containing a filler comprising basic magnesium carbonate and, where desired, a co-filler of calcium carbonate. In addition, the sheet may be treated with a burning chemical such as alkali metal salts of organic carboxylic acids, and compatible acids. | |
