Pregnancy test
First Claim
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1. IN A METHOD FOR DETERMINING PREGNANCY THE STEPS WHICH COMPRISE, ALKALINIZING FEMALE URINE, EXTRACTING THE ALKALINE URINE WITH A WATER IMMISCIBLE ORGANIC SOLVENT, SEPARATING THE AQUEOUS PHASE OF THE EXTRACTED URINE FROM THE ORGANIC SOLVENT EXTRACT, ACIDIFYING THE EXTRACTED URINE, ADDING 2,4-DINITROPHENYLHYDRAZINE TO THE ACIDIFIED URINE, AND ALKALINIZING THE RESULTING REACTION MIXTURE.
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1 Claim
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1. IN A METHOD FOR DETERMINING PREGNANCY THE STEPS WHICH COMPRISE, ALKALINIZING FEMALE URINE, EXTRACTING THE ALKALINE URINE WITH A WATER IMMISCIBLE ORGANIC SOLVENT, SEPARATING THE AQUEOUS PHASE OF THE EXTRACTED URINE FROM THE ORGANIC SOLVENT EXTRACT, ACIDIFYING THE EXTRACTED URINE, ADDING 2,4-DINITROPHENYLHYDRAZINE TO THE ACIDIFIED URINE, AND ALKALINIZING THE RESULTING REACTION MIXTURE.
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Current AssigneeGarwood C. Richardson, Gustav W. Rapp
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Original AssigneeGarwood C. Richardson, Gustav W. Rapp
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InventorsRichardson, Garwood C., Rapp, Gustav W.
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Application NumberUS03/081,828Time in Patent Office1,077 DaysField of SearchUS Class Current436/65CPC Class CodesG01N 33/743 Steroid hormonesY10T 436/200833 Carbonyl, ether, aldehyde o...
