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:
Dec. 06, 1983
Filed:
May. 06, 1981
Applicant:
Inventors:
Ian Burn, Williamstown, MA (US);
Stephen M Neirman, Williamstown, MA (US);
Assignee:
Sprague Electric Company, North Adams, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
264 59 ; 264 61 ; 264 62 ; 427 80 ; 357 10 ;
Abstract
Formulations for a variety of air sintered ceramic barrier layer capacitors are provided wherein from 0.3 to 1.7 mole % of donor material is added to a strontium titanate and the relative amounts of strontium and titanium have been adjusted so that large-small cation balance and charge balance may be achieved by strontium vacancies, e.g. ##EQU1## These low cost materials have large grains and exhibit high dielectric constants.