US Patent No: 4,911,794

Number of patents in Portfolio can not be more than 2000

Measuring with zero volume cell

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Abstract

Methods and apparatuses are described for determining the presence of an analyte in a sample suspected of containing the analyte. The method comprises contacting a concentrate of a determinable element capable of being detected by means of a semiconductive electrode with the electrode in the presence of a relatively large volume of an assay medium. The determinable element is present in the concentrate in the amount related to the amount of analyte present in the sample. The volume of the medium in diffusive communication with the concentrate is then reduced and the determinable element is detected by means of the effect that the determinable element has on the semiconductive electrode.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MOLECULAR DEVICES CORPORATIONSUNNYVALE, CA37

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Parce, John W Palo Alto, CA 11 957
Zuk, Robert F Burlingame, CA 41 1480

Cited Art

Patent Info (Count) # Cites Year
 
HITACHI, LTD. (1)
4,486,272 Method of electrochemical measurement utilizing photochemical reaction and apparatus therefor 4 1982
 
MOLECULAR DEVICES CORPORATION (1)
4,591,550 Device having photoresponsive electrode for determining analytes including ligands and antibodies 112 1984
 
OHMICRON TECHNOLOGY, INC. (1)
4,444,892 Analytical device having semiconductive organic polymeric element associated with analyte-binding substance 177 1982
 
UNIVERSITY OF PITTSBURGH (1)
4,293,310 Photoelectrochemical immunoassay 46 1980
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (1)
4,490,236 Method and means for electrode calibration 8 1983

Patent Citation Ranking

Forward Cites

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6,551,494 Small volume in vitro analyte sensor 295 2000
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7,058,437 Methods of determining concentration of glucose 186 2003
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7,225,535 Method of manufacturing electrochemical sensors 179 2003
7,563,350 Small volume in vitro analyte sensor 4 2003
7,381,184 Sensor inserter assembly 40 2003
6,975,893 Mass transport limited in vivo analyte sensor 99 2003
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SANOFI-AVENTIS DEUTSCHLAND GMBH (83)
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8,414,503 Methods and apparatus for lancet actuation 0 2007
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7,988,644 Method and apparatus for a multi-use body fluid sampling device with sterility barrier release 0 2007
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