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:
Jul. 03, 2018
Filed:
Sep. 04, 2014
Applicant:
Toray Industries, Inc., Tokyo, JP;
Inventors:
Assignee:
TORAY INDUSTRIES, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K 8/588 (2006.01); C08L 67/04 (2006.01); C09K 8/035 (2006.01); C09K 8/508 (2006.01); C09K 8/68 (2006.01); C09K 8/88 (2006.01); E21B 43/26 (2006.01);
U.S. Cl.
CPC ...
C09K 8/588 (2013.01); C08L 67/04 (2013.01); C09K 8/035 (2013.01); C09K 8/508 (2013.01); C09K 8/68 (2013.01); C09K 8/88 (2013.01); E21B 43/26 (2013.01); C09K 2208/08 (2013.01);
Abstract
Provided is a method of recovering gaseous hydrocarbons and/or liquid hydrocarbons from underground, characterized by using a polylactic acid) resin comprising an a poly-L-lactic acid component and a poly-D-lactic acid component and having a heat of fusion at 190° C. or higher, as measured by differential scanning calorimetry, of 20 J/g or more, wherein the underground is at a depth of 3,000 m or deeper. According to the recovery method of the present invention, shale gas, shale oil, and the like can be recovered efficiently.