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:
Apr. 10, 1990
Filed:
Sep. 07, 1984
Applicant:
Inventors:
Truong D Thanh, Kawasaki, JP;
Nobuo Iwase, Kamakura, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ;
U.S. Cl.
CPC ...
174255 ; 428471 ; 501135 ; 501139 ;
Abstract
A circuit substrate comprises a sintered oxide body of barium, tin and boron as an insulating body which is able to be fired at a temperature less than 1300.degree. C. The circuit substrate is further improved in moisture resistance by containing titanium or securing substantially the composition of BaSn(BO.sub.3).sub.2.