Patents by Inventor Ronald W. Williams

Ronald W. Williams 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).

  • Patent number: 11958974
    Abstract: The present invention relates to an asphalt product. The asphalt product includes an asphalt binder and a bio-oil blend comprising a mixture of a non-hydrogenated bio-oil and a partially hydrogenated bio-oil, where the bio-oil blend is mixed with the asphalt binder to form an asphalt product having a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C. and/or a viscosity of 0.15 Pa·s to 1.50 Pa·s at a temperature ranging from 120° C. to 165° C. The present invention further relates to methods of producing an asphalt product and methods of applying an asphalt product to a surface.
    Type: Grant
    Filed: January 4, 2021
    Date of Patent: April 16, 2024
    Assignee: IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC.
    Inventors: Ronald Christopher Williams, Joseph Herbert Podolsky, Nacu Hernandez, Eric W. Cochran
  • Patent number: 11945953
    Abstract: The present invention relates to an asphalt product that comprises an asphalt component and a plurality of pellets comprising a mixture of a ground tire rubber and an elastomeric polymer, where the density difference between the asphalt component and the plurality of pellets is less than 10%. The present invention further relates to a pellet comprising a ground tire rubber (“GTR”) and an elastomeric polymer mixed with the GTR, where the GTR has a density of less than 1.12 g/cm3. Also disclosed are methods of producing improved asphalt and paving a surface.
    Type: Grant
    Filed: May 25, 2023
    Date of Patent: April 2, 2024
    Assignee: IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC.
    Inventors: Eric W. Cochran, Nacu Hernandez, Ronald Christopher Williams
  • Patent number: 7645125
    Abstract: A variable capacity automotive refrigerant compressor is provided with a pressure equalization passage between the crankcase volume and the suction passage in the manifold to prevent a pressure imbalance between the two that could otherwise cause a reduction in crankcase lubricant retention during extended periods of system inactivity.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: January 12, 2010
    Assignee: Delphi Technologies, Inc.
    Inventors: Bradley Joseph Dewispelaere, Ronald W Williams
  • Patent number: 7097796
    Abstract: A method of preparing a molded article by means of an in-mold decoration process, is described. The method includes, providing a laminate (4) of a plurality of separate releasable thermoplastic labels (14) superposed over a carrier film (26). A decoration (86) is applied in-line to the exposed second surface (68) of the labels (14), thereby forming a decorated laminate (5). The decorated laminate (5) is forwarded and indexed into a mold (20) such that the exposed first surface (77) of the carrier film (26) abuts at least a portion of the interior surface of the mold, and the decorated second surface (68) of the label (14) faces the interior space of the mold. Plastic material (e.g., thermoplastic material) is injected into the mold against the decorated surface of the label, thus forming a molded article. The carrier film (26) is then separated from the molded article.
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: August 29, 2006
    Assignee: Bayer Materialscience LLC
    Inventors: Ronald W. Williams, Christopher Cooper, Stephen G. Smith, Timothy J. Jacobs
  • Publication number: 20040227267
    Abstract: A method of preparing a molded article by means of an in-mold decoration process, is described. The method includes, providing a laminate (4) of a plurality of separate releasable thermoplastic labels (14) superposed over a carrier film (26). A decoration (86) is applied in-line to the exposed second surface (68) of the labels (14), thereby forming a decorated laminate (5). The decorated laminate (5) is forwarded and indexed into a mold (20) such that the exposed first surface (77) of the carrier film (26) abuts at least a portion of the interior surface of the mold, and the decorated second surface (68) of the label (14) faces the interior space of the mold. Plastic material (e.g., thermoplastic material) is injected into the mold against the decorated surface of the label, thus forming a molded article. The carrier film (26) is then separated from the molded article.
    Type: Application
    Filed: May 13, 2003
    Publication date: November 18, 2004
    Inventors: Ronald W. Williams, Christopher Cooper, Stephen G. Smith, Timothy J. Jacobs