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:
Feb. 12, 2002
Filed:
Mar. 14, 2000
Applicant:
Inventors:
Assignee:
SARL Kappa Biotech, Montauban, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61F 2/00 ; A61K 9/14 ; A61K 4/730 ;
U.S. Cl.
CPC ...
A61F 2/00 ; A61K 9/14 ; A61K 4/730 ;
Abstract
The present invention relates to a particulate biodegradable matrix comprising a biodegradable and hydrophilic core with a base of carbohydrate or polyol or polyamine matrix, cross-linked and derived in the mass by variable amounts of ionic groups; a hydrophilic polymer layer associated with the central core by chemical, for example ionic, interaction; and surface molecules or polymers grafted on the external polymer layer by covalent bonds.
Mercier, Philippe. (2002). Biodegradable ionic matrix of variable internal polarity with grafted polymer (U.S. Patent No. 6346263). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6346263
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile