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. 06, 1976
Filed:
Jun. 27, 1974
Christopher Vallance, Runcorn, EN;
Imperial Chemical Industries Limited, London, EN;
Abstract
A process for the manufacture of a porous diaphragm of a synthetic material, especially polytetrafluoroethylene, which comprises forming a sheet of the synthetic material in admixture with a solid particulate additive (eg starch) to be removed therefrom, introducing said sheet into a cell, and removing the solid particulate additive from the sheet by treating the sheet in situ in the cell with an acid (eg hydrochloric acid) containing a corrosion inhibitor (eg propargyl alcohol). The porous diaphragms are especially suitable for use in diaphragm cells for the production of chlorine from sodium chloride brine.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile