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. 22, 2005
Filed:
Aug. 02, 2000
Applicants:
Jonathan Hughes, Brighouse, GB;
Steven Weir, Huddersfield, GB;
Paul Moran, Ilkley, GB;
Inventors:
Assignee:
Ciba Specialty Chemicals Water Treatments Ltd., Bradford, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12Q001/02 ; C12N011/02 ; C12N011/08 ; C12N001/02 ;
U.S. Cl.
CPC ...
Abstract
A process of flocculating microbial cell material from a suspending medium which contains cell material, comprising adding to the suspending medium a first polymeric material which is cationic and has intrinsic viscosity of not more than 2 dl/g, and subsequently or simultaneously adding to the suspending medium a second polymeric material which is cationic or substantially non-ionic and has intrinsic viscosity of at least 4 dl/g, and allowing the cell material to flocculate.