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:
Oct. 23, 2001
Filed:
May. 09, 1997
Applicant:
Inventors:
Gunther Penners, Leverkusen, DE;
Klemens Lustig, Wuppertal, DE;
Jörg Petersen-von Gehr, Bochum, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 9/26 ; A61K 9/20 ; A61K 9/48 ; A61K 9/14 ;
U.S. Cl.
CPC ...
A61K 9/26 ; A61K 9/20 ; A61K 9/48 ; A61K 9/14 ;
Abstract
The present invention relates to administration forms having a relatively long gastric residence time, in the preparation of which mixtures of polymers containing lactam groups and polymers containing carboxyl groups are used, and which are distinguished both by marked swelling properties and by high dimensional stability in the swollen state.