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. 06, 2007
Filed:
Sep. 28, 2004
Masafumi Hashimoto, Ube, JP;
Toshiyuki Nishino, Ube, JP;
Toshihiko Anno, Ube, JP;
Hiroaki Yamaguchi, Ichihara, JP;
Masafumi Hashimoto, Ube, JP;
Toshiyuki Nishino, Ube, JP;
Toshihiko Anno, Ube, JP;
Hiroaki Yamaguchi, Ichihara, JP;
Ube Industries, Ltd., , JP;
Abstract
An easily slidable polyimide film having a polyimide surface layer comprising a polyimide which is thermoplastic and has a glass transition temperature of 190–450° C., wherein there are dispersed in the polyimide of the polyimide surface layer, in a proportion of approximately 0.5–10 mass % based on the polyimide of the polyimide surface layer, wholly aromatic polyimide particles made of a polyimide comprising at least 80 mass % of a pyromellitic acid component and a p-phenylenediamine component, and having a median size of 0.3–0.8 μm and a maximum size of no greater than 2 μm, in at least about 1 μm of the polyimide surface layer.