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:
Dec. 25, 1990
Filed:
Jul. 14, 1989
Applicant:
Inventors:
Henry N Beck, Walnut Creek, CA (US);
Robert D Mahoney, Danville, CA (US);
Hawk S Wan, Antioch, CA (US);
Richard A Lundgard, Antioch, CA (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B29C / ;
U.S. Cl.
CPC ...
264 41 ; 55 16 ; 21050034 ; 264234 ; 26428889 ; 2642902 ; 521 64 ;
Abstract
This invention relates to semi-permeable anisotropic syndiotatic polystyrene microporous membranes and a process for preparing such membranes.
Quick Actions:
Beck, Henry. (1990). Anisotropic microporous syndiotactic polystyrene membranes and a process (U.S. Patent No. 4980101). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4980101
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile