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:
Dec. 19, 2000
Filed:
Dec. 19, 1997
Applicant:
Inventors:
Masao Tanihara, Kurashiki, JP;
Yoshiharu Fukunishi, Kurashiki, JP;
Assignee:
Kuraray Co., Ltd., Kurashiki, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
525 60 ; 525 61 ;
Abstract
A polyvinyl alcohol is provided containing structural units of the following formula (I) at a molar fraction of 0.05-0.50 and the structural units of the following formula (II) at a molar fraction of 0.0001 to 0.50; ##STR1## wherein R.sup.1, R.sup.2, R.sub.3 and X are as desribed herein, and its use in preparation of gels, particularly hydrogels, effective for use in wound dressing materials.