Patents by Inventor Steve Havadtoy

Steve Havadtoy 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).

  • Apparatus for testing compositions in contact with a porous medium
    Patent number: 6878344
    Abstract: An apparatus for use in testing a plurality of compositions in parallel. The apparatus includes an upper plate having a plurality of openings extending therethrough to form upper fluid chambers and a lower plate having a plurality of openings extending at least partially therethrough to form cavities. A central plate having a plurality of openings extending therethrough to form central fluid chambers is positioned between the upper and lower plates with the central chambers in alignment with the upper chambers and the cavities. A porous sheet is interposed between the upper and central plates such that an upper surface of the sheet is in contact with fluid within the upper chamber and a lower surface of the sheet is in contact with fluid within the central chamber. The apparatus further includes a flexible membrane positioned between the lower and central plates such that changes in pressure within the cavities or fluid chambers cause deflection of the membrane to force fluid to pass through the porous sheet.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: April 12, 2005
    Assignee: Symyx Technologies, Inc.
    Inventors: Paul Mansky, Richard Tiede, Steve Havadtoy
  • Apparatus and method for testing compositions in contact with a porous medium
    Patent number: 6455007
    Abstract: An apparatus for use in testing a plurality of compositions in parallel. The apparatus includes an upper plate having a plurality of openings extending therethrough to form upper fluid chambers and a lower plate having a plurality of openings extending at least partially therethrough to form cavities. A central plate having a plurality of openings extending therethrough to form central fluid chambers is positioned between the upper and lower plates with the central chambers in alignment with the upper chambers and the cavities. A porous sheet is interposed between the upper and central plates such that an upper surface of the sheet is in contact with fluid within the upper chamber and a lower surface of the sheet is in contact with fluid within the central chamber. The apparatus further includes a flexible membrane positioned between the lower and central plates such that changes in pressure within the cavities or fluid chambers cause deflection of the membrane to force fluid to pass through the porous sheet.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: September 24, 2002
    Assignee: Symyx Technologies, Inc.
    Inventors: Paul Mansky, Richard Tiede, Steve Havadtoy
  • Apparatus and method for testing compositions in contact with a porous medium
    Publication number: 20020110925
    Abstract: An apparatus for use in testing a plurality of compositions in parallel. The apparatus includes an upper plate having a plurality of openings extending therethrough to form upper fluid chambers and a lower plate having a plurality of openings extending at least partially therethrough to form cavities. A central plate having a plurality of openings extending therethrough to form central fluid chambers is positioned between the upper and lower plates with the central chambers in alignment with the upper chambers and the cavities. A porous sheet is interposed between the upper and central plates such that an upper surface of the sheet is in contact with fluid within the upper chamber and a lower surface of the sheet is in contact with fluid within the central chamber. The apparatus further includes a flexible membrane positioned between the lower and central plates such that changes in pressure within the cavities or fluid chambers cause deflection of the membrane to force fluid to pass through the porous sheet.
    Type: Application
    Filed: April 5, 2002
    Publication date: August 15, 2002
    Applicant: Symyx Technologies, Inc.
    Inventors: Paul Mansky, Richard Tiede, Steve Havadtoy