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:
Nov. 08, 1994
Filed:
Feb. 24, 1993
Applicant:
Inventors:
Edward O Dingilian, Newark, DE (US);
George E Heinsohn, Elkton, MD (US);
Assignee:
Vanson L. P., Redmond, WA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ; C07H / ; C08B / ;
U.S. Cl.
CPC ...
514 55 ; 514 62 ; 536 20 ; 536 552 ; 536122 ;
Abstract
N-Halochitosans which are terpolymers containing 1 to 35% of 2-deoxy-2-acetaminodoglucose monomeric units, 1 to 90% of 2-deoxy-2-haloaminoglucose monomeric units, and 8-98% of 2-deoxy-2-haloaminoglucose monomeric units wherein the halogen is chlorine or bromine and their preparation is disclosed. The preferred preparation is by treatment of an aqueous solution of a chitosan salt with a halogenating agent.