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:
Dec. 30, 2025
Filed:
Jun. 20, 2019
Sumitomo Electric Industries, Ltd., Osaka, JP;
Sumitomo Electric Wintec, Inc., Koka, JP;
Hideaki Saito, Osaka, JP;
Masaaki Yamauchi, Osaka, JP;
Jun Sugawara, Koka, JP;
Yudai Furuya, Koka, JP;
Kengo Yoshida, Koka, JP;
Yuji Hatanaka, Koka, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
SUMITOMO ELECTRIC WINTEC, INC., Koka, JP;
Abstract
The resin composition according to one aspect is a resin composition containing a polyamic acid and a solvent, wherein the polyamic acid has a repeating unit represented by the following general formula (1) in a molecular chain, and the molecular chain has a structure represented by the following general formula (2) at one end or both ends. The proportion of the structure represented by the following general formula (2) relative to 1 mol of the repeating unit represented by the following general formula (1) is 0.001 mol or more and 0.1 mol or less. In the following general formulas, Ris a tetravalent organic group; Ris a divalent organic group; and Ris an organic group having 15 or less carbon atoms.