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:
Nov. 03, 2009
Filed:
Mar. 30, 2001
Kazuyuki Onishi, Kawasaki, JP;
Toshiyasu Matsui, Kawasaki, JP;
Hiroshi Kurakata, Kawasaki, JP;
Masahiko Sugimura, Kawasaki, JP;
Kazuyuki Onishi, Kawasaki, JP;
Toshiyasu Matsui, Kawasaki, JP;
Hiroshi Kurakata, Kawasaki, JP;
Masahiko Sugimura, Kawasaki, JP;
Zeon Corporation, Tokyo, JP;
Abstract
This invention provides a material for a multi-layer circuit board, excellent in insulating property and burying properties and free from occurrence of cracks, a production method, and a multi-layer circuit board using the insulating material. The invention provides an insulating material having a curable composition layer wherein the curable composition layer contains 0 to 50 pieces/cmof foreign matter having particle sizes falling within a range of 30 to 50 μm, a production method, and a production method for a multi-layer circuit board using the insulating material.