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:
Aug. 27, 2002
Filed:
Mar. 30, 2000
Applicant:
Inventors:
Lynn M. Kimball, Robbinsdale, MN (US);
Laura J. Bauer, Edina, MN (US);
William V. Fowler, Minneapolis, MN (US);
Laurie E. Lynch, Eden Prairie, MN (US);
Assignee:
Optical Sensors Incorporated, Minneapolis, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 2/48 ; G01N 2/164 ; C08H 5/00 ;
U.S. Cl.
CPC ...
C08F 2/48 ; G01N 2/164 ; C08H 5/00 ;
Abstract
The present invention discloses novel polymer compositions comprising cellulose acrylamide, acrylamide and/or a fluorescent indicator species, and membranes made with these compositions. Optical pH sensors for monitoring the pH in a fluid sample, and methods for making such pH sensors are also disclosed. The pH sensors have reduced sensitivity to sample components that can interfere with pH measurements.