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. 02, 2019
Filed:
Jul. 12, 2016
Applicant:
Toyo Seikan Group Holdings, Ltd., Tokyo, JP;
Inventor:
Seishi Yoshikawa, Kanagawa, JP;
Assignee:
TOYO SEIKAN GROUP HOLDINGS, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K 8/035 (2006.01); C09K 8/12 (2006.01); E21B 43/26 (2006.01); E21B 43/267 (2006.01); C09K 8/68 (2006.01); C09K 8/88 (2006.01); E21B 21/00 (2006.01);
U.S. Cl.
CPC ...
C09K 8/12 (2013.01); C09K 8/035 (2013.01); C09K 8/68 (2013.01); C09K 8/885 (2013.01); E21B 21/003 (2013.01); E21B 43/26 (2013.01); E21B 43/267 (2013.01); C09K 2208/26 (2013.01);
Abstract
A method of extracting underground natural resources through an ore chute located in a temperature region where temperature in the ground is not higher than 60° C., comprising introducing a dispersion solution obtained by dispersing polyoxaylate in water into the ore chute with pressure to hydrolyze the polyoxalate.