Patents by Inventor Richard I. Bretz

Richard I. Bretz 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).

  • Stable blister free flexible graphite and method
    Patent number: 5582811
    Abstract: A stable blister free flexible graphite is formed in accordance with the present invention by performing two chemical reactions including a first step of high temperature heat treatment which converts the active carbon surface from hydrophilic to hydrophobic and generates active surface sites and a second step of exposing the heat treated graphite to a stabilizing reagent for stabilizing the active sites generated by the first step of high temperature heat treatment.
    Type: Grant
    Filed: September 22, 1995
    Date of Patent: December 10, 1996
    Assignee: UCAR Carbon Technology Corporation
    Inventors: Ronald A. Greinke, Richard I. Bretz
  • Room temperature setting carbonaceous cement with increased electrical conductivity and flexural strength
    Patent number: 5550176
    Abstract: A room temperature setting carbonaceous cement comprising a solid carbonaceous material, a catalyst, a liquid carbonizable component, and copper particles, which when treated with the catalyst will provide a carbon yield of at least 40% for the liquid component at an elevated baking temperature and possess increased flexural strength at elevated temperatures and reduced electrical resistance.
    Type: Grant
    Filed: March 23, 1995
    Date of Patent: August 27, 1996
    Assignee: UCAR Carbon Technology Corporation
    Inventors: Irwin C. Lewis, Terrence A. Pirro, Ronald A. Greinke, Richard I. Bretz, Dennis J. Kampe
  • Low surface acid intercalated graphite and method
    Patent number: 5376450
    Abstract: Particles of intercalated graphite are formed by treating graphite particles with an intercalant and contacting the graphite particles with an organic molecule having C.sub.8 -C.sub.30 carbon atoms and a polar end functional group.
    Type: Grant
    Filed: September 30, 1992
    Date of Patent: December 27, 1994
    Assignee: UCAR Carbon Technology Corporation
    Inventors: Ronald A. Greinke, Richard I. Bretz
  • Room temperature setting carbonaceous cement with increased oxidation resistance
    Patent number: 5373051
    Abstract: A room temperature setting carbonaceous cement comprising a solid carbonaceous material, a catalyst and a liquid carbonizable component, and a boron containing or phosphorus containing material, which when treated with the catalyst will possess increased oxidation resistance at elevated temperatures.
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: December 13, 1994
    Assignee: Ucar Carbon Technology Corporation
    Inventors: Irwin C. Lewis, Terrence A. Pirro, Ronald A. Greinke, Richard I. Bretz, Dennis J. Kampe
  • Method for storing methane using a halogenating agent treated activated carbon
    Patent number: 5372619
    Abstract: A halogenated or sulfonated active carbon which has a high storage capacity for methane is provided from selected halogens in elemental form or solutions of such halogens or from solutions of sulfuric acid, fuming sulfuric acid, sulfur trioxide.
    Type: Grant
    Filed: October 14, 1992
    Date of Patent: December 13, 1994
    Assignee: Ucar Carbon Technology Corporation
    Inventors: Ronald A. Greinke, Richard I. Bretz, Joseph T. Mullhaupt
  • Room temperature setting carbonaceous cement
    Patent number: 5280063
    Abstract: A room temperature setting carbonaceous cement comprising a solid carbonaceous material, a catalyst and a liquid carbonizable component which when treated with the catalyst will provide a carbon yield of at least 40% at an elevated baking temperature and possess a flexural strength which is above at least 750 psi at room temperature and at said elevated temperature.
    Type: Grant
    Filed: April 17, 1992
    Date of Patent: January 18, 1994
    Assignee: Ucar Carbon Technology Corporation
    Inventors: Irwin C. Lewis, Terrence Pirro, Ronald A. Greinke, Richard I. Bretz, Dennis J. Kampe