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:
Oct. 05, 1999
Filed:
Aug. 07, 1998
Applicant:
Inventors:
Jonathan Hughes, Huddersfield, GB;
Yvonne Christine Armitage, Huddersfield, GB;
Assignee:
Ciba Specialty Chemicals Water Treatments Limited, Bradford, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12P / ; C12N / ; C07C / ; C08J / ;
U.S. Cl.
CPC ...
435129 ; 435228 ; 435262 ; 524827 ;
Abstract
Acrylamidase enzymes are provided which have acrylamidase activity at pH 4.0 which is at least 50% of their acrylamidase activity at pH 7.0. Such enzymes can be produced by the novel microorganisms Rhodococcus strains NCIMB 40889 and NCIMB 40755. Such enzymes and microorganisms can be used for reducing free acrylamide in polyacrylamides which are produced at low pH and in particular cationic and substantially non-ionic polyacrylamides.