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. 19, 2016
Filed:
Aug. 18, 2010
Nobuharu Hisano, Ube, JP;
Taizou Murakami, Ube, JP;
Masafumi Kohda, Ichihara, JP;
Hiroaki Yamaguchi, Ube, JP;
Nobuharu Hisano, Ube, JP;
Taizou Murakami, Ube, JP;
Masafumi Kohda, Ichihara, JP;
Hiroaki Yamaguchi, Ube, JP;
UBE INDUSTRIES, LTD., Ube-Shi, JP;
Abstract
A polyimide film, which is produced by the reaction of a tetracarboxylic acid component comprising 3,3',4,4′-biphenyltetracarboxylic dianhydride as the main component and a diamine component comprising p-phenylenediamine as the main component, is heated at a temperature of from 460° C. to 550° C., and then water or an alkaline aqueous solution is sprayed on a surface of the polyimide film for surface treatment, thereby improving adhesiveness, while maintaining the excellent properties inherent in the polyimide film.