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:
Apr. 25, 1978
Filed:
Dec. 17, 1975
Applicant:
Inventors:
Erik G Sundberg, Nol, SW;
Hans Steig, Soest, DT;
Assignee:
Aktiebolaget Tudor, Sundbyberg, SW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429145 ;
Abstract
Storage battery separators with greater security against short circuit due to pinholes are made by using at least two adjacent microporous sheets, each thinner than those normally used when one alone is present. Sawdust may be added to the composition of one or both of the sheets.