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. 24, 2018
Filed:
Nov. 14, 2013
Applicant:
Kureha Corporation, Tokyo, JP;
Inventors:
Assignee:
KUREHA CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/12 (2006.01); B29C 47/00 (2006.01); B29C 47/90 (2006.01); B29C 47/88 (2006.01); B29C 47/92 (2006.01); E21B 33/138 (2006.01); B29K 33/04 (2006.01); B29L 31/00 (2006.01);
U.S. Cl.
CPC ...
E21B 33/1208 (2013.01); B29C 47/003 (2013.01); B29C 47/0016 (2013.01); B29C 47/0021 (2013.01); B29C 47/0033 (2013.01); B29C 47/0061 (2013.01); B29C 47/0066 (2013.01); B29C 47/8805 (2013.01); B29C 47/8815 (2013.01); B29C 47/90 (2013.01); B29C 47/92 (2013.01); E21B 33/138 (2013.01); B29C 47/0004 (2013.01); B29C 2947/92695 (2013.01); B29C 2947/92704 (2013.01); B29K 2033/04 (2013.01); B29L 2031/003 (2013.01); Y10T 428/298 (2015.01);
Abstract
A solidification- and extrusion-molded article of polyglycolic acid, which is formed of a resin material containing polyglycolic acid, the polyglycolic acid having a melt viscosity of 200 to 2,000 Pa·s, and has a thickness or diameter of greater than 100 mm but not greater than 500 mm. A downhole tool or a component thereof and a ball sealer for petroleum excavation are formed by cutting the solidification- and extrusion-molded article. A method for manufacturing the solidification- and extrusion-molded article of polyglycolic acid and a method for manufacturing a ball sealer for petroleum excavation.