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:
Jan. 03, 2017
Filed:
Apr. 22, 2013
Applicant:
Kureha Corporation, Chuo-ku, Tokyo, JP;
Inventors:
Shunsuke Abe, Tokyo, JP;
Masahiro Yamazaki, Tokyo, JP;
Takeo Takahashi, Tokyo, JP;
Hiroyuki Sato, Tokyo, JP;
Kenichi Suzuki, Tokyo, JP;
Assignee:
KUREHA CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/38 (2006.01); C09K 8/516 (2006.01); C09K 8/70 (2006.01); C09K 8/12 (2006.01); D01F 6/62 (2006.01); C09K 8/508 (2006.01); C09K 8/88 (2006.01); C09K 8/90 (2006.01); C09K 8/035 (2006.01); C09K 8/487 (2006.01); C09K 8/68 (2006.01); C09K 8/92 (2006.01); C04B 28/02 (2006.01); C04B 16/06 (2006.01); D01D 5/253 (2006.01); D01D 5/24 (2006.01);
U.S. Cl.
CPC ...
C09K 8/38 (2013.01); C04B 16/0683 (2013.01); C04B 28/02 (2013.01); C09K 8/035 (2013.01); C09K 8/12 (2013.01); C09K 8/487 (2013.01); C09K 8/5086 (2013.01); C09K 8/516 (2013.01); C09K 8/68 (2013.01); C09K 8/70 (2013.01); C09K 8/885 (2013.01); C09K 8/905 (2013.01); C09K 8/92 (2013.01); D01F 6/625 (2013.01); C09K 2208/08 (2013.01); D01D 5/24 (2013.01); D01D 5/253 (2013.01);
Abstract
Polyglycolic acid resin short fibers for a well treatment fluid, the fibers having the following characteristics of (a) to (e): (a) an outside diameter of 5 to 300 μm; (b) a fiber length of 1 to 30 mm; (c) fineness of 0.1 to 25 D; (d) strength of 1 to 20 gf/D; and (e) a ratio of an area of the polyglycolic acid resin with respect to an area of a circle circumscribing a cross section of the fibers being from 10 to 95%; and a well treatment fluid containing the polyglycolic acid resin short fibers for a well treatment fluid.