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. 02, 1999
Filed:
Sep. 15, 1997
Applicant:
Inventors:
Dieter Lohmann, Muchenstein, CH;
Donald Richard Randell, Stockport, GB;
Assignee:
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08B / ;
U.S. Cl.
CPC ...
536 20 ; 536124 ; 514 55 ; 1061622 ;
Abstract
Chitosan derivatives having structural units of formula I, II and III in random distribution ##STR1## wherein the substituents R.sub.1 are each, independently of one another, H or --Z--R.sub.2 --X, R.sub.3 is H or acetyl, Y is the anion O--Z--R.sub.2 --X, and
Lohmann, Dieter. (1999). Crosslinked n-substituted chitosan derivatives (U.S. Patent No. 5977330). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5977330
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile