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:
Sep. 03, 2024
Filed:
Dec. 29, 2022
Applicant:
Mitsubishi Chemical Corporation, Tokyo, JP;
Inventors:
Kazutoshi Tsuji, Tokyo, JP;
Norihito Sakai, Tokyo, JP;
Tomoya Fujita, Tokyo, JP;
Takahiro Saka, Tokyo, JP;
Chizuko Furo, Tokyo, JP;
Assignee:
MITSUBISHI CHEMICAL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/72 (2006.01); C08F 16/06 (2006.01); C09K 8/68 (2006.01); E21B 43/26 (2006.01);
U.S. Cl.
CPC ...
C09K 8/725 (2013.01); C08F 16/06 (2013.01); C09K 8/68 (2013.01); E21B 43/26 (2013.01); E21B 43/261 (2013.01);
Abstract
A problem to be solved of the present invention is to provide a diverting agent which gradually dissolves in water. The present invention relates to a diverting agent containing a polyvinyl alcohol-based resin and a method of filling a fracture using the diverting agent.