Process for preparing salt of hyaluronic acid with a pharmaceutically active substance
Patent 4736024 Issued on April 5, 1988. Estimated Expiration Date: 
April 3, 2006. 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 3, 2006. 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 2583096 3792164 Pipe joint and method of making same Local anaesthetic salts of chondroitinsulfate compounds Ultrapure hyaluronic acid and the use thereof Hyaluronate based compositions and cosmetic formulations containing same O-ଲ. -D (and O-.. -D) Multigalactopyranosyl, xylopyranosyl and glucopyranosyl sulfate salts Patent #: 4359458 InventorsAssigneeApplicationNo. 06/847632 filed on 04/03/1986US Classes:536/55.3, Processes536/101, Metal containing536/121, Metal containing536/18.7, Nitrogen containing536/54, Sulfur containing536/55.2Glucosamine containingExaminersPrimary: Brown, J. TravisAssistant: Peselev, Elli Attorney, Agent or FirmInternational ClassesA61K 38/18 (20060101)A61K 45/06 (20060101) A61K 45/00 (20060101) A61K 47/48 (20060101) A61K 47/36 (20060101) A61K 9/00 (20060101) Foreign Application Priority Data1985-04-05 ITAbstractPharmaceutical preparations for topical administration containing a pharmacologically active substance together with hyaluronic acid or a molecular weight fraction thereof. The hyaluronic acid may be in the form of the free acid or may be a salt with an alkali or alkaline earth metal, magnesium, aluminum or ammonium, or in the form of a salt with one or more pharmacologically active substances.Other References
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