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:
Aug. 03, 1993
Filed:
Jul. 24, 1991
Yorio Iwasaki, Shimodate, JP;
Toshiro Okamura, Shimodate, JP;
Shigeharu Arike, Tochigi, JP;
Yasushi Shimada, Tsukuba, JP;
Hiroharu Kamiyama, Shimodate, JP;
Eisaku Namai, Shimodate, JP;
Fujio Kojima, Shimodate, JP;
Hitachi Chemical Company Ltd., Tokyo, JP;
Abstract
A coaxial conductor interconnection wiring board includes at least one coaxial conductor and at least one conductive hole having an inner wall covered with a metal film connected to a central signal conductor of the coaxial conductor. The conductive shield of the coaxial conductor is connected to the ground layer by connection metal layers. A conductor insulating layer surrounds the metallized conductor hole and the connection metal layers surround a part of the additional conductor insulating layer. Thus, the conductive hole, insulating layer, and connection metal layers function as a coaxial conductor.