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:
Jul. 13, 1982
Filed:
Oct. 31, 1980
Applicant:
Inventors:
Frank Solomon, Great Neck, NY (US);
Charles Grun, Matawan, NJ (US);
Assignee:
Diamond Shamrock Corporation, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25B / ; C25B / ;
U.S. Cl.
CPC ...
204296 ; 264 49 ; 429247 ; 429 42 ;
Abstract
This disclosure is directed to a one pass process for forming a porous, uniaxially oriented polytetrafluoroethylene sheet which is coherent and suitable for utilization as an electrode backing (wetproofing) sheet and the resulting backing sheet. Particulate PTFE is blended in an organic liquid medium to form a dispersion to which a pore-forming agent is added. After mixing, the organic liquid is removed and the dry mix is fibrillated, chopped and formed into a sheet by passing it once through heated rollers.