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:
Aug. 06, 2024
Filed:
Nov. 15, 2019
Sumitomo Chemical Company, Limited, Tokyo, JP;
Koji Nishioka, Osaka, JP;
Naoya Satoh, Tokyo, JP;
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Abstract
An object of the present invention is to provide a production method for a backing plate that can reduce displacement of the groove. The present invention relates to a production method for a backing plate, comprising joining a plate-shaped body having a groove on one side and a cover member, wherein: the groove has at least two first parts extending in the longitudinal direction; a region where the body and the cover member are joined to each other has at least four first regions to be joined extending in the longitudinal direction and corresponding to two opposing side surfaces in each of the at least two first parts; and the joining of the body and the cover member to each other in the at least four first regions to be joined is performed by: (a) joining the body and the cover member to each other in one first region to be joined corresponding to one side surface in one first part; (b) joining the body and the cover member to each other in one region to be joined, among the remaining regions to be joined, corresponding to one side surface in another first part; and (c) repeating the step (b).