Anti-plaque agents
Patent 4130637 Issued on December 19, 1978. Estimated Expiration Date: 
October 3, 1997. 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.
October 3, 1997. 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 References3617439 InventorApplicationNo. 05/839154 filed on 10/03/1977US Classes:424/54, Ammonia, amine, or derivative thereof (e.g., urea, etc.)424/52, Fluorine or fluorine compound containing424/57, Phosphate compound containing436/907FETAL LUNG MATURITYExaminersPrimary: Rose, Shep K.Assistant: Eakin, M. C. Attorney, Agent or FirmInternational ClassesA61K 8/44 (20060101)A61K 8/30 (20060101) A61Q 11/00 (20060101) AbstractNovel betaine compounds derived from higher alkyl dimethyl carboxylic acid quaternary ammonium compounds; the process of preparing said betaines; and compositions containing an effective antimicrobial amount of said betaines admixed with a pharmaceutical carrier. These compounds are effective in controlling dental plaque without producing an esthetically unacceptable discoloration of tooth surfaces.Other References
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