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, 2001
Filed:
Apr. 09, 1998
Kazuhito Kobayashi, Yuki, JP;
Yasushi Kumashiro, Shimodate, JP;
Atsushi Takahashi, Yuki, JP;
Koji Morita, Shimodate, JP;
Takahiro Tanabe, Shimodate, JP;
Kazunori Yamamoto, Tsukuba, JP;
Akishi Nakaso, Oyama, JP;
Shigeharu Arike, Tochigi-ken, JP;
Kazuhisa Otsuka, Shimodate, JP;
Naoyuki Urasaki, Tsukuba, JP;
Daisuke Fujimoto, Shimodate, JP;
Nozomu Takano, Yuki, JP;
Hitachi Chemical Company, Ltd., Tokyo, JP;
Abstract
An insulating varnish comprising a resin component, electrical insulating whiskers, and if necessary, one or more additives such as an ion adsorbent, and/or an organic reagent for preventing injury from copper, produced by adding the additives to the resin component and the whiskers, or filtering the whiskers, or milled by using a beads mill or a three-roll mill, or the like, is excellent for producing a multilayer printed circuit board having high wiring density, high reliability and excellent other electrical properties.