Patents by Inventor Richard D. Armenta

Richard D. Armenta has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Hapten derivatized capture membrane and diagnostic assays using such membrane
    Patent number: 6291169
    Abstract: The present invention encompasses a capture membrane comprising a porous filter membrane having a hapten bound directly or indirectly to the membrane wherein complexes formed by specific binding having an anti-hapten bound to a binding member of the specifically binding complex are removed from a solution by the hapten as the solution passes through the membrane. In the preferred embodiment biotin is the hapten and avidin or streptavidin is the anti-hapten.
    Type: Grant
    Filed: March 30, 1999
    Date of Patent: September 18, 2001
    Assignee: Molecular Devices Corporation
    Inventors: John D. Olson, Robert F. Zuk, Richard D. Armenta, Charles R. Burke, Viola T. Kung, Edward L. Sheldon
  • Hapten derivatized capture membrane and diagnostic assays using such membrane
    Patent number: 5888728
    Abstract: The present invention encompasses a capture membrane comprising a porous filter membrane having a hapten bound directly or indirectly to the membrane wherein complexes formed by specific binding having an anti-hapten bound to a binding member of the specifically binding complex are removed from a solution by the hapten as the solution passes through the membrane. In the preferred embodiment biotin is the hapten and avidin or streptavidin is the anti-hapten.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 30, 1999
    Assignee: Molecular Devices Corporation
    Inventors: John D. Olson, Robert F. Zuk, Richard D. Armenta, Charles R. Burke, Viola T. Kung, Edward L. Sheldon
  • Migratory detection immunoassay
    Patent number: 4956275
    Abstract: Novel methods and devices are provided for detecting analytes, where the sample is placed upstream from a reagent which is a component of a signal-producing system. The detection zone is provided upstream from the sample, where the amount of reagent which becomes bound at two sites is determined and the two values used for an accurate determination of an analyte.
    Type: Grant
    Filed: April 14, 1987
    Date of Patent: September 11, 1990
    Assignee: Molecular Devices Corporation
    Inventors: Robert F. Zuk, Richard D. Armenta, Jonathan Briggs
  • Immunoassays employing protected labels
    Patent number: 4578350
    Abstract: An improved immunoassay for determining the presence of an analyte in a serum sample and conjugates therefor are described. The known method comprises combining the sample with a conjugate of the analyte and an enzyme and with a receptor for analyte, and determining the presence of analyte in the sample from the effect that the sample has on the enzymatic activity when compared to the enzymatic activity in the absence of analyte or in the presence of known amounts of analyte. The present invention resides in the conjugation to the enzyme label of a label protectant which allows modulation of the enzymatic activity to occur and minimizes background interference between the enzyme label and the sample, which would alter the enzymatic activity.
    Type: Grant
    Filed: September 23, 1983
    Date of Patent: March 25, 1986
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Richard D. Armenta, Ian Gibbons