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:
Oct. 25, 2011
Filed:
Apr. 17, 2006
Masato Murakami, Ichihara, JP;
Hiroaki Yamaguchi, Ichihara, JP;
Masato Murakami, Ichihara, JP;
Hiroaki Yamaguchi, Ichihara, JP;
Ube Industries, Ltd., , JP;
Abstract
A polyimide film-laminated body is composed of a metal layer and an aromatic polyimide layer formed by casting a polyamic acid solution composition, comprising 3,3',4,4′-biphenyltetracarboxylic dianhydride as an essential tetracarboxylic dianhydride component and with introduction of a specific diamine component, onto a metal foil. The polyimide film-laminated body has an excellent gas permeation rate and moisture permeation rate, with heat resistance, a high elastic modulus and a low linear expansion coefficient, and with reduced foaming and delamination during the high-temperature steps for formation of the laminated body.