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:
Apr. 16, 2019
Filed:
May. 11, 2018
Applicant:
Kureha Corporation, Tokyo, JP;
Inventor:
Shunsuke Abe, Tokyo, JP;
Assignee:
KUREHA CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K 8/68 (2006.01); C08G 69/36 (2006.01); E21B 41/02 (2006.01); C09K 8/508 (2006.01); E21B 43/26 (2006.01); C08G 69/40 (2006.01);
U.S. Cl.
CPC ...
C09K 8/68 (2013.01); C08G 69/36 (2013.01); C08G 69/40 (2013.01); C09K 8/5086 (2013.01); E21B 41/02 (2013.01); E21B 43/26 (2013.01);
Abstract
Provided is a well-treatment fluid that reduces a load on the environment. A well-treatment fluid containing a non-ionic polyamino acid derivative including an α-type or β-type polyaspartic acid monomer unit represented by Formula (I) and an α-type or β-type polyaspartic acid monomer unit represented by Formula (II).