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:
Jan. 07, 1992
Filed:
Oct. 11, 1990
Jau-Ho Jean, Export, PA (US);
Tapan K Gupta, Monroeville, PA (US);
Aluminum Company of America, Pittsburgh, PA (US);
Abstract
A ceramic composition for forming a ceramic dielectric body having a dielectric constant of less than about 4.2 and a TCE of less than about 4.0 ppm/c. The composition comprises a mixture of finely divided particles of 25-50 weight percent borosilicate glass and 50-75 weight percent high silica glass and 1-25 weight percent sufficient of crystalline ceramic material to inhibit the formation of crystalline forms of silica. The high silica glass contains essentially 0.5-1 wt. % alumina, 1-5 wt. % B.sub.2 O and approximately 95-98 wt. % SiO.sub.2. The mixture is fired at a temperature of less than 1000.degree. C.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile