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:
Jun. 28, 2005
Filed:
Oct. 26, 2001
Masaru Nishinaka, Otsu, JP;
Takashi Itoh, Otsu, JP;
Kanji Shimo-ohsako, Settsu, JP;
Kaneka Corporation, Osaka, JP;
Abstract
The present invention provides a laminate used for a printed wiring substrate and a multilayer printed wiring board which have high heat resistance, wiring patterns with narrow pitches, vias with a small diameter, insulating layer having uniform thickness and stable adhesion between the metal layer and the synthetic resin film, and which contribute to miniaturization, high capability and functional improvement of electronic equipment. The present invention relates to a metal laminate comprising a metal layer laminated on one or both faces of a synthetic resin film, wherein the metal layer is a metal foil having a thickness of at most 5 μm. The present invention also relates to a laminate comprising a metal layer having a thickness of at most 5 μm on one or both faces of a synthetic resin film, wherein the synthetic resin film is a polyimide film obtained by immersing a partially imidized or partially dried poly(amide acid) film in a solution of a compound containing at least one element selected from the group consisting of aluminum, silicon, titanium, manganese, iron, cobalt, copper, zinc, tin, antimony, lead, bismuth and palladium or by applying the solution to the film, and then completely drying and imidizing the poly(amide acid) film, the resulting polyimide film containing at least one of the elements.