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:
Oct. 10, 1989
Filed:
Sep. 14, 1988
Applicant:
Inventors:
On-Kok Chang, San Jose, CA (US);
John C Hall, San Jose, CA (US);
Jeffrey Phillips, Saratoga, CA (US);
Lenard F Silvester, Scotts Valley, CA (US);
Assignee:
Altus Corporation, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ; H01M / ; H01M / ;
U.S. Cl.
CPC ...
424 61 ; 429 94 ; 429129 ; 429211 ; 429247 ;
Abstract
A rechargeable electrochemical cell which resists venting in an over-discharge condition. A first microporous membrane is provided as a separator between the cell's anode and cathode, which allows for the passage of cell electrolyte, but inhibits the passage of metal dendrites. A tab extends from the anode to the cell casing and between the tab and inner wall of the cell casing is provided a second microporous membrane characterized as being less resistant to the passage of alkaline metal dendrites than the first microporous membrane.