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. 05, 2008
Filed:
Dec. 26, 2003
Hirotake Matsumoto, Mishima-gun, JP;
Hitoshi Shirato, Mishima-gun, JP;
Hidekazu Inoue, Mishima-gun, JP;
Hirotake Matsumoto, Mishima-gun, JP;
Hitoshi Shirato, Mishima-gun, JP;
Hidekazu Inoue, Mishima-gun, JP;
Sekisui Chemical Co., Ltd., Osaka, JP;
Abstract
It is an object of the present invention to provide a release film which is superior in the flexibility at high temperature, the conformability to circuit patterns, the heat resistance, the releasing property and the non-contaminative property, and easily discarded after use. The present invention relates to a release film, which is used in a manufacturing process of a printed-circuit board, a flexible printed-circuit board or a multilayer printed-circuit board, having a layer comprising a resin composition comprising a resin having a polar group in a main chain as a matrix and having a halogen content of 5% by weight or less on at least one surface.