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:
Dec. 19, 1989
Filed:
Feb. 21, 1989
Yoichi Shiraishi, Higashimatsuyama, JP;
Junya Sakemi, Tokyo, JP;
Kunio Ono, Ome, JP;
Ichiro Naka, Akishima, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi VLSI Engineering Corporation, Tokyo, JP;
Abstract
Interconnections interconnecting terminals to be connected by routings are dissolved into two-terminal interconnections and it is determined to which kind of terminals the terminals of each two-terminal interconnection belong, among connected diffusion layer, separated diffusion layer and gate. The interconnections are classified into groups by the combination of the kind of two terminals for each interconnection. The respective groups of interconnections are routed in the channel on the field effect transistor row according to a predetermined order of groups.