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:
Apr. 14, 1998
Filed:
May. 16, 1996
Applicant:
Inventors:
Hans Beer, Bosinghausen, DE;
Wolfgang Demmer, Gottingen, DE;
Hans-Heinrich Horl, Bovenden, DE;
Dieter Melzner, Gottingen, DE;
Dietmar Nussbaumer, Gottingen, DE;
Hans-Weddo Schmidt, Hardegsen, DE;
Eberhard Wunn, Roringen, DE;
Assignee:
Sartorius AG, Gottingen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07H / ; C08B / ; C08B / ; C12Q / ;
U.S. Cl.
CPC ...
536 56 ; 536 553 ; 536106 ; 536 84 ; 536 57 ; 536 59 ; 549512 ; 4352546 ; 435 18 ; 5483171 ;
Abstract
A process for cross-linking a cellulose hydrate membrane by use of a water-soluble diepoxide in an alkaline solution. The membrane so produced is highly resistant to attack by alkalis, acids and cellulases, and is readily regenerable by alkaline cleaning.