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:
Apr. 07, 1981
Filed:
Jan. 15, 1979
Applicant:
Inventor:
Jacob J Gibson, Alexandria, VA (US);
Assignee:
Technology Resources, Inc., Washington, DC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
2323 / ; 23913 ; 252408 ; 422 56 ; 422 61 ; 435-4 ; 435 28 ; 435805 ;
Abstract
A diagnostic method and indicator for heme in controlled sensitivity is provided by impregnating a bibulous body, such as a test strip with a solution of a color indicator in leuco form and drying and storing in stable active form, and in use applying to the strip a test sample containing heme. The test color is then developed in the strip by wetting the test sample and strip in contact therewith with a peroxide solution of a solvent for the leuco dye carrying the oxygen released from the peroxide by the heme peroxidase in the test sample, such as blood or body tissue or residues containing occult blood whose presence is to be determined.