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:
Mar. 22, 2022
Filed:
Jul. 09, 2018
Kureha Corporation, Tokyo, JP;
Seishiro Kobayashi, Tokyo, JP;
Teruaki Yoshii, Tokyo, JP;
KUREHA CORPORATION, Tokyo, JP;
Abstract
A plug which does not cause an adverse effect such as failure of a member constituting the plug when a wellbore is plugged. The downhole plug () includes a mandrel () having a hollow structure, a sealing member () attached to an outer circumferential surface of the mandrel () and being deformable by exerted pressure, and a socket () attached, adjacent to the sealing member (), onto the outer circumferential surface of the mandrel (), downstream of where the pressure is exerted on the sealing member (). An inner circumferential edge () of the socket () which comes in contact with the mandrel () protrudes toward the sealing member ().