Local anaesthetic salts of chondroitinsulfate compounds
Patent 4105760 Issued on August 8, 1978. Estimated Expiration Date: 
December 15, 1996. 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 15, 1996. 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 3506642 3524847 3719665 3720659 InventorsApplicationNo. 05/750851 filed on 12/15/1976US Classes:514/54, Polysaccharide514/818, ANESTHETIC, LOCAL536/118, Sulfur containing536/122, Sulfur or halogen containing536/51, Dextran derivatives536/53, Oxygen double bonded and nitrogen bonded directly to the same carbon536/54Sulfur containingExaminersPrimary: Brown, Johnnie R.Attorney, Agent or FirmInternational ClassesC08B 37/00 (20060101)C08B 37/08 (20060101) Foreign Application Priority Data1975-12-18 HUAbstractWater-soluble local anaesthetic compounds having sustained effect are prepared by reacting a chondroitin derivative with a basic local anaesthetic compound. |
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