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:
Apr. 12, 1988
Filed:
Aug. 29, 1986
Applicant:
Inventors:
Maurice M Kreevoy, Minneapolis, MN (US);
Ann T Kotchevar, Minneapolis, MN (US);
Assignee:
Regents of the University of Minnesota, Minneapolis, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
252184 ; 252189 ; 252364 ; 564 90 ; 564 92 ; 564282 ; 4236585 ; 423D / ;
Abstract
Quaternary ammonium salts are disclosed which are highly effective as complexing agents for the extraction of hydrogen ion and anions such as nitrate from an aqueous feed solution via a coupled ion transport mechanism employing supported liquid membranes.
Kreevoy, Maurice. (1988). Liquid membrane system for the removal of nitrate from water (U.S. Patent No. 4737309). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4737309
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile