Patents by Inventor John Rausa

John Rausa 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).

  • Silica-filled elastomeric compounds
    Patent number: 6992122
    Abstract: The present invention relates to silica-filled halogenated butyl elastomers, such as bromobutyl elastomers (BIIR) wherein the silica is surface-functionalized with a protein.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: January 31, 2006
    Assignee: Bayer Inc.
    Inventors: Rui Resendes, William Hopkins, John Rausa
  • Silica-filled elastomeric compounds
    Publication number: 20040030028
    Abstract: The present invention relates to silica-filled halogenated butyl elastomers, such as bromobutyl elastomers (BIIR) wherein the silica is surface-functionalized with a protein.
    Type: Application
    Filed: May 9, 2003
    Publication date: February 12, 2004
    Inventors: R. Resendes, William Hopkins, John Rausa
  • Elastomeric butyl compounds with improved chemical bonding between the butyl elastomer and the filler
    Publication number: 20010009948
    Abstract: The invention provides a process for preparing a filled halobutyl elastomer which comprises admixing a halobutyl elastomer, particles of filler and a silane that has at least one hydroxyl group or hydrolysable group attached to a silicon atom of the silane, and curing the filled halobutyl elastomer with sulphur. The invention also provides a filled composition that has improved properties when compared with known carbon black filled elastomeric compositions.
    Type: Application
    Filed: December 20, 2000
    Publication date: July 26, 2001
    Inventors: William Hopkins, Carl Walter von Hellens, Ahti Koski, John Rausa