Patents by Inventor Charles E. Crepeau

Charles E. Crepeau 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: 6908561
    Abstract: Methods for adhering polyimide dielectric materials to copper-, titanium-, aluminum-, or copper-and-titanium-containing portions of a substrate are described. The methods include the steps of applying adhesion promoter to a clean surface of the substrate, and curing the adhesion promoter. SPIE varnish is applied over the cured adhesion promoter, and is itself cured. A further layer of adhesion promoter is applied over the cured SPIE varnish, and is cured. The polyimide dielectric material is then laminated to the adhesion promoter. Cleaning of the copper-containing substrate portions is performed by etching with etchant including cupric chloride, cleaning of the titanium-containing substrate portions is performed with etchant including HF, and cleaning of copper- and titanium-containing portions is performed by HF etching followed by cupric chloride etching. Aluminum-containing portions of the substrate are not etched.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: June 21, 2005
    Assignee: Lockhead Martin Corporation
    Inventors: Donald Franklin Foust, William Francis Nealon, Robert G. Davies, Jr., Charles E. Crepeau
  • Patent number: 4351867
    Abstract: An improved material particularly suited for the thermal insulation of building structures, such as residential housing, and a process for making the same, are disclosed. The thermally insulating composite comprises a low-density, cellular, fiber-containing, cementitious material and at least one structural surface element made of the cellular, fiber-containing, cementitious material, the structural surface element of which has a higher density than the low-density, cellular, fiber-containing, cementitious material from which it is formed therefrom and integral therewith. The thermally insulating composite is made by placing a foam of the low-density, cementitious material having entrapped gas therein, in an enclosure at least part of which is permeable to the gas and the liquid medium of the foam, and applying pressure to a surface of that enclosure to remove the gas and the liquid medium at the permeable enclosure.
    Type: Grant
    Filed: March 26, 1981
    Date of Patent: September 28, 1982
    Assignee: General Electric Co.
    Inventors: Robert F. Mulvey, Charles E. Crepeau
  • Patent number: 4310996
    Abstract: An improved material particularly suited for the thermal insulation of building structures such as residential housing. The material comprises an inorganic, low-density cellular thermally insulating foam comprising a gypsum matrix having minute cavities homogeneously distributed therein. The material has a dry density of less than about 6 pounds per cubic foot and a thermal coefficient of less than about 0.37. The gypsum matrix includes therein approximately 1 to 15% by weight of cement, approximately 0.5 to 7% by weight of mineral wool and at least approximately 0.25% by weight of chopped glass.
    Type: Grant
    Filed: April 23, 1980
    Date of Patent: January 19, 1982
    Assignee: General Electric Co.
    Inventors: Robert F. Mulvey, Charles E. Crepeau
  • Patent number: 4240839
    Abstract: An improved material particularly suited for the thermal insulation of building structures such as residential housing. The material comprises an inorganic, low-density cellular thermally insulating foam comprising a gypsum matrix having minute cavities homogeneously distributed therein. The material has a dry density of less than about 3 pounds per cubic foot and a thermal coefficient of less than about 0.37.
    Type: Grant
    Filed: June 28, 1979
    Date of Patent: December 23, 1980
    Assignee: General Electric Company
    Inventors: Charles E. Crepeau, Robert F. Mulvey
  • Patent number: 4161855
    Abstract: An improved material particularly suited for the thermal insulation of building structures such as residential housing and a process for making the same. The material comprises an inorganic, low-density foam with gypsum as the major constiuent.
    Type: Grant
    Filed: February 2, 1978
    Date of Patent: July 24, 1979
    Assignee: General Electric Company
    Inventors: Robert F. Mulvey, Charles E. Crepeau