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:
Jan. 13, 1998
Filed:
Jun. 26, 1995
Junichi Katagiri, Ibaraki-ken, JP;
Akio Takahashi, Hitachiota, JP;
Akira Nagai, Hitachiota, JP;
Haruo Akahoshi, Hitachi, JP;
Kouji Fujisaki, Hitachi, JP;
Akio Mukoh, Mito, JP;
Fumiyuki Kobayashi, Sagamihara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A thin film multilayer wiring material excellent in reliability, yield, productivity, and higher positioning accuracy includes an insulation organic film having a wiring pattern on one surface and an adhesive layer on another principal surface. The insulation organic film is a polyimide film having a heat resistance at a pyrolysis beginning temperature of 350.degree. to 550.degree. C., a dielectric constant of 3.5-2.2 and a flame retardance of V-0 or V-1 according to the UL-94 standard. The adhesive layer contains an ether bismaleimide compound.