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. 18, 2000
Filed:
Nov. 14, 1997
Applicant:
Inventors:
Ponisseril Somasundaran, Nyack, NY (US);
Maltesh Chidambaram, Naperville, IL (US);
Brian A Pethica, Upper Montclair, NJ (US);
Xiang Yu, Paramus, NJ (US);
Anjing Lou, New York, NY (US);
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ; B03B / ;
U.S. Cl.
CPC ...
210729 ; 210737 ; 209-5 ; 516162 ;
Abstract
A process is disclosed for flocculating particles in a liquid suspension by mixing the suspension with a pyrrolidone having alkyl, alkenyl, aryl, alkylaryl, and arylalkyl radicals from 1 to 18 carbon atoms to form a mixture at a temperature above a minimum flocculation temperature for the mixture.