Patents by Inventor Craig Homrighausen

Craig Homrighausen 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).

  • High temperature elastomers from linear poly(silarylene-siloxane-acetylene)
    Patent number: 6784259
    Abstract: A prepolymer, represented by the formula: wherein n is an average value grater than or equal to 0, Ar is an aromatic group, and each R10 is independently selected from the group consisting of alkyl, aryl, alkylaryl, haloalkyl, haloaryl and mixtures thereof and each R11 is independently selected from the group consisting of alkyl, aryl, alkylaryl, haloalkyl, haloaryl and mixtures thereof.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: August 31, 2004
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Teddy M. Keller, Craig Homrighausen
  • High temperature elastomers from linear poly(silarylene-siloxane-acetylene)
    Publication number: 20030158353
    Abstract: A prepolymer, represented by the formula: 1
    Type: Application
    Filed: February 12, 2003
    Publication date: August 21, 2003
    Inventors: Teddy M. Keller, Craig Homrighausen
  • High temperature elastomers from linear poly(silarylene-siloxane-acetylene)
    Patent number: 6579955
    Abstract: A linear polymer has repeating units represented by the formula wherein (a) n is an integer greater than or equal to 0, (b) x is an integer greater than or equal to 1, and  represents an unconjugated acetylenic group when x is equal to 1 or conjugated acetylenic groups when x is greater than 1; (c) Ar is an aromatic group, and (c) R1, R2, R3, R4, R5, R6, R7 and R8 are independently selected from the group consisting of alkyl, aryl, alkylaryl, haloalkyl, haloaryl and mixtures thereof. The linear polymer may be thermally cured to form a crosslinked polymer.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: June 17, 2003
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Teddy M. Keller, Craig Homrighausen
  • High temperature elastomers from linear poly(silarylene-siloxane-acetylene)
    Publication number: 20030045654
    Abstract: A linear polymer has repeating units represented by the formula 1
    Type: Application
    Filed: January 16, 2002
    Publication date: March 6, 2003
    Inventors: Teddy M. Keller, Craig Homrighausen
  • High temperature elastomers from linear poly(silarylene-siloxane-acetylene)
    Patent number: 6362289
    Abstract: A linear polymer has repeating units represented by the formula wherein (a) n is an integer greater than or equal to 0, (b) x is an integer greater than or equal to 1, and  represents an unconjugated acetylenic group when x is equal to 1 or conjugated acetylenic groups when x is greater than 1; (c) Ar is an aromatic group, and (c) R1, R2, R3, R4, R5, R6, R7 and R8 are independently selected from the group consisting of alkyl, aryl, alkylaryl, haloalkyl, haloaryl and mixtures thereof. The linear polymer may be thermally cured to form a crosslinked polymer.
    Type: Grant
    Filed: July 25, 2000
    Date of Patent: March 26, 2002
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Teddy M. Keller, Craig Homrighausen
  • High temperature elastomers from linear poly (silarylene-siloxane-acetylene)
    Patent number: RE39332
    Abstract: A linear polymer has repeating units represented by the formula wherein (a) n is an integer greater than or equal to 0, (b) x is an integer greater than or equal to 1, and ?represents an unconjugated acetylenic group when x is equal to 1 or conjugated acetylenic groups when x is greater than 1; (c) Ar is an aromatic group, and (c) R1, R2, R3, R4, R5, R6, R7 and R8 are independently selected from the group consisting of alkyl, aryl, alkylaryl, haloalkyl, haloaryl, and mixtures thereof. The linear polymer may be thermally cured to form a crosslinked polymer.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: October 10, 2006
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Teddy M. Keller, Craig Homrighausen
  • High temperature elastomers from linear poly (silarylene-siloxane-acetylene)
    Patent number: RE39428
    Abstract: A linear polymer has repeating units represented by the formula wherein (a) n is an integer greater than or equal to 0, (b) x is an integer greater than or equal to 1, and ?represents an unconjugated acetylenic group when x is equal to 1 or conjugated acetylenic groups when x is greater than 1; (c) Ar is an aromatic group, and (c) R1, R2, R3, R4, R5, R6, R7 and R8 are independently selected from the group consisting of alkyl, aryl, alkylaryl, haloalkyl, haloaryl and mixtures thereof. The linear polymer may be thermally cured to form a crosslinked polymer.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: December 12, 2006
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Teddy M. Keller, Craig Homrighausen