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:
Sep. 21, 1993
Filed:
Feb. 26, 1992
Applicant:
Inventor:
Claudia M Yaacoub, Quickborn, DE;
Assignee:
Grace GmbH, , DE;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429249 ; 429250 ;
Abstract
A lead/accumulator with at least one separator made from filled microporous polyolefins is described, in which the formation of colored, mostly dark and often adhesive deposits occurring in practice is reduced in quantity. This is achieved by the fact that in the accumulator, there are present one or more non-ionic surfactants of a specific structure, the HLB value of which amounts to at least 5. In addition a separator made from filled microporous polyolefins is described, which contains one or more of these surfactants.