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. 31, 2002
Filed:
May. 06, 1999
Applicant:
Inventors:
Toshihiro Hamada, Tokyo, JP;
Nobuyoshi Takai, Tokyo, JP;
Kunihiro Shiraki, Osaka-Pref, JP;
Tomokazu Ise, Okayama-Pref., JP;
Assignee:
Kuraray Co., Ltd., Kurashiki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D03D 1/500 ; B32B 2/510 ;
U.S. Cl.
CPC ...
D03D 1/500 ; B32B 2/510 ;
Abstract
A blanket substrate comprising spun yarn of polyvinyl alcohol based fibers, in which the fibers have primary ridged streaks which are formed on their surfaces in the direction of the fiber axis with finer secondary ridged steaks formed in the primary ridged streaks, the fibers having a cross-section circularity of at least 80%.