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:
Aug. 13, 2024
Filed:
Mar. 05, 2020
Applicant:
Mitsubishi Chemical Corporation, Tokyo, JP;
Inventors:
Ryohei Kobayashi, Tokyo, JP;
Tomoya Fujita, Tokyo, JP;
Assignee:
MITSUBISHI CHEMICAL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/588 (2006.01); E21B 43/16 (2006.01); E21B 43/34 (2006.01);
U.S. Cl.
CPC ...
C09K 8/588 (2013.01); E21B 43/16 (2013.01); E21B 43/34 (2013.01);
Abstract
The present invention provides an oil recovery agent which has a property of improving fluidity by reducing viscosity of oil (viscosity reduction properties) and a property of rapidly separating after being dispersed in oil (immediate separability), and which enables to recover oil rapidly. The oil recovery agent of the present invention contains a polyvinyl alcohol resin having a water contact angle of 70° or less when formed into a film.