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:
May. 08, 1990
Filed:
Apr. 17, 1987
Applicant:
Inventors:
Assignee:
Queen's University at Kingston, Kingston, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12Q / ;
U.S. Cl.
CPC ...
435 38 ; 435 29 ; 435 30 ; 435 34 ; 435 18 ; 435849 ;
Abstract
The present invention provides a method which is specific to determining and is capable of enumerating Escherichia coli (E. coli) in a sample water or sewage specimen. The method comprises adding to a cultured specimen a chromogenic reagent which when subjected to in situ E. coli .beta.-glucuronidase activity produces clearly defined vivid colorization of any individual colonies derived from E. coli cells in the test specimen.