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. 12, 2004
Filed:
May. 01, 2001
Applicant:
Inventors:
Shigeyuki Harita, Kurashiki, JP;
Takanori Isozaki, Kurashiki, JP;
Assignee:
Kuraray Co., Ltd., Kurashiki, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08F 1/606 ;
U.S. Cl.
CPC ...
C08F 1/606 ;
Abstract
Difference in retardation between two points separated by 1 cm along the TD direction of a polyvinyl alcohol polymer film is 5 nm or less. The length of a surface for drying a polyvinyl alcohol polymer film is 3 m to 200 m, and the water content of the polyvinyl alcohol polymer film when peeled after passing through the drying surface is 50% by weight or less, in film formation.