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. 15, 1994
Filed:
May. 21, 1993
Hiromitsu Yokoyama, Sagamihara, JP;
Yoshihiko Imanaka, Atsugi, JP;
Kazunori Yamanaka, Sagamihara, JP;
Nobuo Kamehara, Isehara, JP;
Koichi Niwa, Tama, JP;
Takuya Uzumaki, Kawasaki, JP;
Hitoshi Suzuki, Zama, JP;
Takato Machi, Atsugi, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A superconducting circuit board is provided comprising a sintered alumina board containing more than 99% by weight of alumina and an interconnection pattern of an superconducting ceramics formed on the alumina board. Adhesion of the interconnection pattern to the alumina board is improved by an addition of Ti or Si coupling agent to a paste for forming the interconnection pattern. The use of copper powder in place of copper oxide powder as an ingredient forming a superconducting ceramics in the paste is advantageous for printing and obtaining a uniform superconducting ceramic pattern.