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. 16, 1991
Filed:
Jul. 20, 1990
Applicant:
Inventors:
Assignees:
Daicel Chemical Industries, Ltd., Osaka, JP;
Tanabe Seiyaku Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ;
U.S. Cl.
CPC ...
210651 ; 210654 ; 21050037 ;
Abstract
A separating membrane having a porous membrane structure with a pore size distribution such that the membrane does not permeate 90 percent or more of particles having a size of 0.5 micron when the membrane is 0.1 mm thick. The membrane is composed of a material having a nitrogen-containing compound and is liquid-permeable to adsorb and retain phosphopolyols contained in a liquid.
Nagamatsu, Shinji. (1991). Separating membrane and separation method (U.S. Patent No. 5032281). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5032281
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile