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:
Aug. 15, 1978
Filed:
Oct. 27, 1976
Applicant:
Inventors:
Takezo Sano, Takatsuki, JP;
Takatoshi Shimomura, Toyonaka, JP;
Masao Sasaki, Osaka, JP;
Ichiki Murase, Ibaragi, JP;
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ; B01D / ; B01D / ;
U.S. Cl.
CPC ...
210490 ; 2105 / ; 264 22 ; 264 41 ;
Abstract
A method for the preparation of semipermeable membranes is disclosed which comprises exposing porous shaped articles of polyacrylonitrile or copolymers containing acrylonitrile in an amount of more than 40% by mole to a plasma consisting essentially of a gaseous organic compound or the mixture of said gaseous organic compound and an inert gas at room temperature under a pressure of 0.01 to 10 Torr.
Sano, Takezo. (1978). Process for producing semipermeable membranes (U.S. Patent No. 4107049). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4107049
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile