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:
Jan. 27, 2009
Filed:
Jul. 14, 2004
Applicant:
David M. Read, White Bear Lake, MN (US);
Inventor:
David M. Read, White Bear Lake, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61L 9/00 (2006.01); G01N 21/00 (2006.01); G01N 31/00 (2006.01); G01N 33/00 (2006.01); G01N 21/77 (2006.01); G01J 1/48 (2006.01); A62B 7/08 (2006.01); A61B 17/06 (2006.01); B65D 85/00 (2006.01); C12Q 1/22 (2006.01); C12Q 1/02 (2006.01); C12N 11/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a hydrogen peroxide indicator that includes a substrate on which is disposed an indicator composition that includes at least one of a select group of colorants. As a result of contact with hydrogen peroxide, the colorants change color, and even become colorless, thereby providing an indication of the presence of hydrogen peroxide.