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:
Feb. 11, 2003
Filed:
Oct. 12, 2001
Toshihiro Nishii, Hirakata, JP;
Shigeru Yamane, Hirakata, JP;
Shinji Nakamura, Katano, JP;
Hidenori Hayashi, Osaka, JP;
Toru Fujimoto, Katano, JP;
Toshiharu Okada, Ibaraki, JP;
Izuru Nakai, Toyonaka, JP;
Abstract
In manufacturing a double-layered or a multi-layered printed wiring board, a layer of metamorphic substance, which is created by transmuting a substrate material, is formed on an inner wall of a hole during a perforation process of the substrate utilizing radiation energy. The layer of metamorphic substance prevents conductive materials constituting electrical connection formed on the inner wall of the hole from dispersing over a surface of the substrate or permeating into the substrate.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile