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:
Jun. 02, 1992
Filed:
Oct. 25, 1990
Applicant:
Inventors:
Jau-Ho Jean, Export, PA (US);
Tapan K Gupta, Monroeville, PA (US);
Assignee:
Aluminum Company of America, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C / ; C03C / ; C03C / ; H01B / ;
U.S. Cl.
CPC ...
501 21 ; 501 16 ; 501 18 ; 501 49 ; 501 61 ; 501133 ; 501134 ; 252520 ; 428210 ; 428901 ;
Abstract
A ceramic composition for forming a ceramic dielectric body having a dielectric constant of less than about 4.2 at 1 MHz and a linear thermal expansion coefficient of 2.5-3.0 ppm/.degree. C. from room temperature to 200.degree. C. The composition comprises a mixture of finely divided particles of 25-50 vol. % borosilicate glass and 50-75 vol. % titanium silicate glass. The composition can be used with a polymeric binder to produce an unfired green tape which is co-fireable with high conductivity metallurgies such as gold, silver and silver/palladium.