US Patent No: 4,333,734

Number of patents in Portfolio can not be more than 2000

Diagnostic device for fecal occult blood and method of use

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Abstract

Diagnostic test device for fecal occult blood utilizing a test matrix such as paper impregnated with guaiac. False-positive results in the presence of peroxidases are prevented by adding to the matrix a compound that cleaves protein hydrogen bonds such as guanidine hydrochloride and a chelating agent that binds calcium and/or magnesium such as EDTA.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SLOAN-KETTERING INSTITUTE FOR CANCER RESEARCHNEW YORK, NY440

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fleisher, Martin Glen Cove, NY 4 79

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Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
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EXACT SCIENCES CORPORATION (6)
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HELENA LABORATORIES CORPORATION (6)
4,956,300 Aid for determining the presence of occult blood, method of making the aid, and method of using the aid 8 1984
5,273,888 Chemical test kit and method for determining the presence of blood in a specimen and for verifying the effectiveness of the chemicals 8 1988
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5,702,913 Chromgen-reagent test system 10 1989
5,217,874 Fecal occult blood test product with positive and negative controls 29 1991
5,196,167 Fecal occult blood test product with positive and negative controls 43 1991
 
MOSS, STEVEN (5)
6,436,714 Self-contained system and method for testing for fecal occult blood 14 1998
D445906 Test kit housing 6 1998
D427320 Test kit housing 1 1998
7,189,356 Occult blood testing apparatus with features for enhancing ease of use 6 2002
7,592,181 Occult blood testing device 1 2006
 
LITMUS CONCEPTS, INC. (4)
4,615,982 Fecal occult blood test 27 1984
4,939,097 Fecal occult blood test methods 16 1987
4,818,702 Fecal occult blood test reagent 12 1988
5,053,342 Fecal occult blood test reagents 12 1990
 
IMMUNOSTICS, INC. (3)
7,427,505 Fecal occult blood testing device and method 2 2004
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8,304,596 Fecal sampling device and method 0 2008
 
PROPPER MANUFACTURING CO., INC. (3)
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MAYO FOUNDATION FOR MEDICAL EDUCATION AND RESEARCH (2)
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SMITHKLINE DIAGNOSTICS, INC. (2)
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5,310,680 Test for fecal occult blood 18 1993
 
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AMBERGEN, INC. (1)
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MEMORIAL HOSPITAL FOR CANCER AND ALLIED DISEASES (1)
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5,182,191 Occult blood sampling device and assay 61 1989
 
SMITHLKINE INSTRUMENTS,INC. 485 PORTERERO AVE,SUNNYVALE,CA.94086 A CORP OF DE. (1)
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