Patents by Inventor Steven C. Papanu

Steven C. Papanu 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).

  • Latex based adsorbent chip
    Patent number: 7541003
    Abstract: The present invention provides an adsorbent chip, which includes three components, a substrate, an intermediate layer of linker arms and an adsorbent film, which is attached to the linker arms. The adsorbent film is made up of a plurality of adsorbent particles, each of which includes a binding functionality. The invention also provides a method of making the chips of the invention in which the substrate-intermediate film cassette is formed and the adsorbent film is subsequently immobilized thereon. When the adsorbent film is from the same preparation across a particular batch of chips, the chips provide for the acquisition of data that are highly reproducible from one chip to the next throughout the particular batch of chips. Additionally, the invention provides methods for using the chips to perform assays.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: June 2, 2009
    Assignee: Bio-Rad Laboratories, Inc.
    Inventors: Christopher A. Pohl, Steven C. Papanu
  • Latex based adsorbent chip
    Publication number: 20030032043
    Abstract: The present invention provides an adsorbent chip, which includes three components, a substrate, an intermediate layer of linker arms and an adsorbent film, which is attached to the linker arms. The adsorbent film is made up of a plurality of adsorbent particles, each of which includes a binding functionality. The invention also provides a method of making the chips of the invention in which the substrate-intermediate film cassette is formed and the adsorbent film is subsequently immobilized thereon. When the adsorbent film is from the same preparation across a particular batch of chips, the chips provide for the acquisition of data that are highly reproducible from one chip to the next throughout the particular batch of chips. Additionally, the invention provides methods for using the chips to perform assays.
    Type: Application
    Filed: July 16, 2002
    Publication date: February 13, 2003
    Applicant: Ciphergen Biosystems, Inc.
    Inventors: Christopher A. Pohl, Steven C. Papanu
  • Stable oil-in-water emulsions
    Patent number: 4997642
    Abstract: Oil-in-water emulsions containing polyvinyl alcohol, surfactant and a salt with improved freeze-thaw and elevated temperature storage stability.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: March 5, 1991
    Assignee: Sandoz Ltd.
    Inventors: Ralston Curtis, Howard R. Brownell, Steven C. Papanu
  • Pesticidal formulation
    Patent number: 4469675
    Abstract: An oil-in-water pesticidal emulsion concentrate comprising an active ingredient selected from fluvalinate, permethrin, cypermethrin, deltamethrin, fenpropathrin and fenvalerate; polyvinyl alcohol; and optional amounts of surfactant and ethylene or propylene glycol having freeze-thaw stability, 50 degrees centigrade stability and water dispersability.
    Type: Grant
    Filed: December 2, 1982
    Date of Patent: September 4, 1984
    Assignee: Zoecon Corporation
    Inventors: Ralston Curtis, Steven C. Papanu
  • Novel pesticidal formulation
    Patent number: 4372943
    Abstract: An oil-in-water pesticidal emulsion concentrate comprising .alpha.-cyano-3-phenoxybenzyl-2-(2-chloro-4-trifluoromethylphenylamino)-3- methylbutanoate, polyvinyl alcohol and optional amounts of surfactant and ethylene or propylene glycol having freeze-thaw stability, 50 degrees centigrade stability and water dispersability.
    Type: Grant
    Filed: November 30, 1981
    Date of Patent: February 8, 1983
    Assignee: Zoecon Corporation
    Inventors: Steven C. Papanu, Ralston Curtis