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. 26, 1991
Filed:
Oct. 13, 1989
Applicant:
Inventors:
Hans-Josef Buysch, Krefeld, DE;
Alexander Klausener, Krefeld, DE;
Klaus Szablikowski, Walsrode, DE;
Klaus Balser, Walsrode, DE;
Michaela Wilke, Schneverdingen, DE;
Assignee:
Wolff Walsrode Aktiengesellschaft, Walsrode, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08B / ; C08B / ; C08B / ;
U.S. Cl.
CPC ...
536 32 ; 536 48 ; 536 58 ; 536 63 ; 536107 ;
Abstract
New polysaccharide carbonates are produced by acylation of polysaccharides with carbonic acid esters and have degrees of substitution of preferably 0.5 to 3.