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:
Jan. 02, 1990
Filed:
Sep. 19, 1985
Applicant:
Inventors:
Dennis F Dong, Kingston, CA;
Arthur L Clifford, Harrowsmith, CA;
Assignee:
H-D Tech Inc., Woodbridge, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25B / ;
U.S. Cl.
CPC ...
204296 ; 204 98 ; 204128 ; 204257 ; 204283 ;
Abstract
A porous diaphragm is disclosed for use in an electrochemical cell having at least one electrode characterized as porous and self-draining. The diaphragm provides a uniformity of flow of an electrolyte through the diaphragm even when exposed to varying electrolyte head pressures. The porous diaphragm of the invention has a plurality of layers of a microporous polyolefin film or a composite comprising the microporous polyolefin film and a support fabric resistant to deterioration upon exposure to an aqueous solution of an ionizable compound.