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:
Feb. 19, 1980
Filed:
May. 05, 1978
Applicant:
Inventors:
John W Cretzmeyer, Richfield, MN (US);
Hans R Espig, Barrington, IL (US);
Assignee:
Gould Inc., Rolling Meadows, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429 13 ; 429 27 ;
Abstract
Metal/oxygen cells such as zinc/air cells are provided with optimum active life characteristics by interposing, on the air side of the cell, an oxygen diffusivity-limiting membrane, such as, for example, sintered polytetrafluoroethylene, so that no more oxygen is received than is needed for the current rate required for the intended application.