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:
Sep. 13, 1994
Filed:
Nov. 02, 1993
Applicant:
Inventors:
Yasuyuki Suzuki, Suita, JP;
Hisayoshi Shimizu, Takatsuki, JP;
Assignee:
Takeda Chemical Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
524 18 ; 524 17 ; 524 21 ; 524 24 ; 524 27 ; 524 29 ; 524503 ; 524557 ; 514944 ; 424486 ; 424487 ; 424488 ;
Abstract
The hydrogel of the invention contains polyvinyl alcohol (a hydrogel support), and a high water-absorbent resin and/or a hydrophilic high molecular compound, which are capable of containing a large amount of water. The rate of evaporation of water from this hydrogel is slow. The hydrogel retains water for a long time and releases an active ingredient gradually. The hydrogel containing a pharmacologically active substance is useful as a pharmaceutical preparation.