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:
Nov. 23, 1993
Filed:
Jun. 01, 1992
Applicant:
Inventors:
George P Speranza, Austin, TX (US);
Edward T Marquis, Austin, TX (US);
Assignee:
Texaco Chemical Company, White Plains, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ; C02F / ;
U.S. Cl.
CPC ...
210670 ; 210683 ; 210687 ; 210691 ; 210692 ; 210925 ;
Abstract
Disclosed is a method for removing ammonia, organic amines and alkaline impurities from waste water which comprises using a partially spent ion exchange resin which no longer meets the purity requirements for the production of MTBE, washing the catalyst with water, contacting it with waste water for a an adequate period and removing the purified filtrate.