Patents by Inventor Rodney A. Diehl

Rodney A. Diehl 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: 7704746
    Abstract: The invention provides methods for the measurement of carbon dioxide leakage from sequestration reservoirs. Tracer moieties are injected along with carbon dioxide into geological formations. Leakage is monitored by gas chromatographic analyses of absorbents. The invention also provides a process for the early leak detection of possible carbon dioxide leakage from sequestration reservoirs by measuring methane (CH4), ethane (C2H6), propane (C3H8), and/or radon (Rn) leakage rates from the reservoirs. The invention further provides a method for branding sequestered carbon dioxide using perfluorcarbon tracers (PFTs) to show ownership.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: April 27, 2010
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Curt White, Arthur Wells, J. Rodney Diehl, Brian Strazisar
  • Patent number: 5948722
    Abstract: A method for preparing an acid catalyst having a long shelf-life is provided comprising doping crystalline iron oxides with lattice-compatible metals and heating the now-doped oxide with halogen compounds at elevated temperatures. The invention also provides for a catalyst comprising an iron oxide particle having a predetermined lattice structure, one or more metal dopants for said iron oxide, said dopants having an ionic radius compatible with said lattice structure; and a halogen bound with the iron and the metal dopants on the surface of the particle.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: September 7, 1999
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Malvina Farcasiu, Phillip B. Kaufman, J. Rodney Diehl, Hendrik Kathrein
  • Patent number: 5111872
    Abstract: A novel cover (10) for one end of the casing within which a vehicular transmission is housed and a unique method for making the cover. The cover (10) has a metallic body portion (12) within which a unitary manifold (40) has been cast in situ. The manifold (40) incorporates a plurality of conduits having artight mechanically crimped ends (A-E) which have been preformed and conjoined into the unitary manifold (40) that is precisely disposed within a mold. Molten metal is admitted into the mold to encapsulate the manifold (40) within the metallic body portion (12) of the cover (10). After the cover (10) has been cast, with the manifold (40) encapsulated therein, the cover (10) is removed from the mold, and only a relatively modest amount of machining operations are required to complete the cover (10).
    Type: Grant
    Filed: July 8, 1991
    Date of Patent: May 12, 1992
    Assignee: Saturn Corporation
    Inventors: Rodney A. Diehl, Robert L. Uhrman, Jr., Robert G. Bishop, Donald B. Campbell
  • Patent number: 4958537
    Abstract: A novel cover (10) for one end of the casing within which a vehicular transmission is housed and a unique method for making the cover. The cover (10) has a metallic body portion (12) within which a unitary manifold (40) has been cast in situ. The manifold (40) incorporates a plurality of conduits (A-E) which have been preformed and conjoined into the unitary manifold (40) that is precisely disposed within a mold. Molten metal is admitted into the mold to encapsulate the manifold (40) within the metallic body portion (12) of the cover (10). After the cover (10) has been cast, with the manifold (40) encapsulated therein, the cover (10) is removed from the mold, and only a relatively modest amount of machining operations are required to complete the cover (10).
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: September 25, 1990
    Assignee: Saturn Corporation
    Inventors: Rodney A. Diehl, Robert L. Uhrman, Jr., Robert G. Bishop, Donald B. Campbell
  • Patent number: 4206953
    Abstract: A hydrostatic bearing support for a work tool has an inner stationary member with circumferentially disposed hydrostatic bearing areas which when pressurized, radially support an outer constant thickness cylindrical sleeve. Axial bearing support for the outer sleeve is provided by annular hydrostatic thrust bearing areas disposed at each end of the stationary member and cooperating with end caps which are secured to the outer sleeve. All of the liquid passages for directing pressurized liquid to the bearing members are formed within the stationary member.
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: June 10, 1980
    Assignee: General Motors Corporation
    Inventors: Rodney A. Diehl, Henry Douglas, Robert W. Watson