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:
Mar. 24, 1987
Filed:
Dec. 22, 1982
Applicant:
Inventors:
Assignee:
Choay S.A., Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C08B / ;
U.S. Cl.
CPC ...
514 56 ; 536 21 ;
Abstract
This invention relates to oxalate-free preparations of heparin, particularly in the form of calcium salts of heparin, which can be used for the preparation of injectable solutions of heparin which have long storage life. The invention is also directed to a process for freeing heparin from its oxalate content, such as by fractional precipitations by alcohol in the presence of adjusted amounts of mineral salt, until the heparin precipitated contains less than about 70 ppm of oxalate but may contain less than about 30 ppm, preferably even less than 20 ppm.