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:
Mar. 20, 1990
Filed:
Jul. 17, 1989
Applicant:
Inventors:
Sidney D Ross, Williamstown, MA (US);
Shirley A Hart, Adams, MA (US);
Assignee:
Sprague Electric Company, North Adams, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01G / ;
U.S. Cl.
CPC ...
361506 ; 252 622 ;
Abstract
An electrolytic capacitor employs an electrolyte having amic acid salts prepared in situ in the electrolyte by reacting a cyclic anhydride with ammonia or an amine in an aprotic solvent acting as an acceptor in hydrogen bonding and thereafter adding glycol.