Magnesite/magnesium hydroxide fillers for smoking article wrappers
Patent 5228463 Issued on July 20, 1993. Estimated Expiration Date: 
November 27, 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.
November 27, 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 2673565 2801636 3744496 Smoking materials Smoking article High porosity carbon coated cigarette papers Wrapper for smoking articles containing magnesium oxide Wrapper for smoking articles and method Wrapper for smoking articles and method Wrapper for smoking articles and method InventorsAssigneeApplicationNo. 800053 filed on 11/27/1991US Classes:131/365, Wrapper or binder162/8, With alkali metal, alkaline earth metal, or ammonium compound162/139Cigarette paperExaminersPrimary: Millin, V.Assistant: Doyle, J. Attorney, Agent or FirmForeign Patent References
International ClassA24D 001/02AbstractThe invention relates to the use of co-crystalline magnesite/magnesium hydroxide compositions as fillers for smoking article wrappers. Smoking articles made with wrappers containing these compositions exhibit significantly reduced sidestream smoke and does not compromise subjective attributes.Other References
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