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. 01, 2025
Filed:
Feb. 16, 2022
Applicant:
Kureha Corporation, Tokyo, JP;
Inventor:
Ramu Miike, Tokyo, JP;
Assignee:
KUREHA CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/12 (2006.01); E21B 47/117 (2012.01);
U.S. Cl.
CPC ...
E21B 33/1208 (2013.01); E21B 33/12 (2013.01); E21B 47/117 (2020.05); E21B 2200/08 (2020.05);
Abstract
A downhole plug device, a fixing method of a tubular body, and an inspection method of a tubular body. In a downhole plug device, a plug that seals one end of a housing having a cylindrical shape is fixed to the housing by a bolt that penetrates through the plug. The downhole plug device is connected to a tip of a tubular body inserted into a casing in a well and is used for a method of inspecting presence or absence of leakage of fluid from the tubular body in the well.