The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 15, 1987
Filed:
Mar. 12, 1985
Applicant:
Inventors:
Endre A Balazs, Ft. Lee, NJ (US);
Adolf Leshchiner, Fairview, NJ (US);
Adelya Leshchiner, Fairview, NJ (US);
Philip Band, Brooklyn, NY (US);
Assignee:
Biomatrix, Inc., Ridgefield, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08B / ; C08F / ; C12P / ; C12R / ;
U.S. Cl.
CPC ...
536 551 ; 435267 ;
Abstract
Disclosed is hylan, a chemically modified hyaluronic acid preparation characterized by the presence of small amounts (0.005-0.05% by weight) of aldehyde cross-linking groups covalently bonded to the hyaluronic acid molecular chains. Also disclosed is a method of obtaining hylan comprising treating hyaluronic acid in situ in animal tissues containing same with a treatment mixture including a reagent (typically an aldehyde) which is reactive towards hyaluronic acid and the proteins contained in the animal tissue.