Patents by Inventor Raymond V. Sara

Raymond V. Sara 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).

  • Method of forming an aluminum protective coating on a carbon-carbon composite
    Patent number: 5413816
    Abstract: A method of forming an oxidation resistant aluminum coating on a carbon-carbon composite comprising applying a slurry over the carbon-carbon composite, composed of an aluminum intermetallic in a liquid suspending vehicle including a high char yield adhesive thermoplastic and a glassy carbon, distributing aluminum, in elemental form, over the coated surface and reacting the composite and coating in a furnace.
    Type: Grant
    Filed: December 24, 1991
    Date of Patent: May 9, 1995
    Assignee: UCAR Carbon Technology Corporation
    Inventor: Raymond V. Sara
  • Ternary brazing alloy for carbon or graphite
    Patent number: 5102621
    Abstract: A ternary brazing alloy for carbon or graphite consisting essentially of 0.5-10 wt % titanium, 10 to 50 wt % tin, balance copper.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: April 7, 1992
    Assignee: Ucar Carbon Technology Corporation
    Inventor: Raymond V. Sara
  • Method for sintered shapes with controlled grain size
    Patent number: 5045269
    Abstract: A method for producing sintered shapes of refractory powders with improved strength and toughness using a grain growth inhibiting powder to inhibit grain growth.
    Type: Grant
    Filed: February 1, 1991
    Date of Patent: September 3, 1991
    Assignee: Union Carbide Coatings Service Technology Corporation
    Inventor: Raymond V. Sara
  • Process for forming a metal boride coating on a carbonaceous substrate
    Patent number: 4979998
    Abstract: A process to form a uniform metal boride coating on a carbonaceous substrate by first forming a metal carbide coating and reacting the carbide coating with a boron compound.
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: December 25, 1990
    Assignee: Union Carbide Corporation
    Inventors: Ching F. Chang, Raymond V. Sara
  • Process for producing electrodes from carbonaceous particles and a boron source
    Patent number: 4770825
    Abstract: A carbonaceous source material, other than premium petroleum coke is subjected to the action of elemental boron or a boron compound, whereby the highly disordered structure is transformed into one that is very graphitic in an otherwise conventional electrode manufacturing process.
    Type: Grant
    Filed: January 22, 1987
    Date of Patent: September 13, 1988
    Assignee: Union Carbide Corporation
    Inventor: Raymond V. Sara
  • Carbonaceous articles having oxidation prohibitive coatings thereon
    Patent number: 4567103
    Abstract: A carbonaceous article, e.g., a carbon or graphite electrode, is provided with an oxidation prohibitive coating comprising a compliant, low strength, porous, sintered, particulate, refractory, ceramic material. A cover layer is preferably applied over this compliant, low strength, ceramic layer, the cover layer comprising a rigid, glassy substance which is plastic and flowable at temperatures above about 750.degree. C.
    Type: Grant
    Filed: July 12, 1984
    Date of Patent: January 28, 1986
    Assignee: Union Carbide Corporation
    Inventor: Raymond V. Sara
  • Oxidation prohibitive coatings for carbonaceous articles
    Patent number: 4559270
    Abstract: A carbonaceous article, e.g., a carbon or graphite crucible or mold, is provided with an oxidation prohibitive coating comprising a rigid, glassy, ceramic, refractory material containing mullite and silicon carbide or boron carbide or both. The carbonaceous article has a coefficient of thermal expansion which is greater than about 1.5.times.10.sup.-6 inch/inch/.degree.C.
    Type: Grant
    Filed: July 28, 1983
    Date of Patent: December 17, 1985
    Assignee: Union Carbide Corporation
    Inventor: Raymond V. Sara
  • Stress relieved metal/ceramic abradable seals
    Patent number: 4521496
    Abstract: Metal/ceramic abradable seals of the type used in jet aircraft are improved by using a substrate which is able to deform during cooling from the brazing temperature and then rendering the substrate rigid after the cool down.
    Type: Grant
    Filed: April 7, 1983
    Date of Patent: June 4, 1985
    Inventor: Raymond V. Sara
  • Chemically bonded aluminum coating for carbon via monocarbides
    Patent number: 4402744
    Abstract: An aluminum coated carbon article or composite, and process therefor having aluminum chemically bonded to carbon via an interface of a metal monocarbide formed in situ when an intermetallic phase comprising aluminum and a metal capable of reacting with carbon to form a metal carbide is reduced by carbon to aluminum and a metal carbide, the metal selected from the group consisting of tantalum, titanium and hafnium.
    Type: Grant
    Filed: August 29, 1980
    Date of Patent: September 6, 1983
    Assignee: Union Carbide Corporation
    Inventor: Raymond V. Sara
  • Stress relieved metal/ceramic abradable seals and deformable metal substrate therefor
    Patent number: 4379812
    Abstract: Metal/ceramic abradable seals of the type used in jet aircraft are improved by using a substrate which is able to deform during cooling from the brazing temperature and then rendering the substrate rigid after the cool down.
    Type: Grant
    Filed: July 24, 1980
    Date of Patent: April 12, 1983
    Assignee: Union Carbide Corporation
    Inventor: Raymond V. Sara
  • Chemically bonded aluminum coating for carbon via monocarbides
    Patent number: 4347083
    Abstract: An aluminum coated carbon article or composite, and process therefor having aluminum chemically bonded to carbon via an interface of a metal monocarbide formed in situ when an intermetallic phase comprising aluminum and a metal capable of reacting with carbon to form a metal carbide is reduced by carbon to aluminum and a metal carbide, the metal selected from the group consisting of tantalum, titanium and hafnium.
    Type: Grant
    Filed: August 29, 1980
    Date of Patent: August 31, 1982
    Assignee: Union Carbide Corporation
    Inventor: Raymond V. Sara
  • Chemically bonded aluminum coated carbon via monocarbides
    Patent number: 4252856
    Abstract: An aluminum coated carbon article or composite, and process therefor having aluminum chemically bonded to carbon via an interface of a metal monocarbide formed in situ when an intermetallic phase comprising aluminum and a metal capable of reacting with carbon to form a metal carbide is reduced by carbon to aluminum and a metal carbide, the metal selected from the group consisting of tantalum, titanium and hafnium.
    Type: Grant
    Filed: February 1, 1978
    Date of Patent: February 24, 1981
    Assignee: Union Carbide Corporation
    Inventor: Raymond V. Sara
  • Oxidation resistant porous abradable seal member for high temperature service
    Patent number: 4251272
    Abstract: Porous abradable sintered metal structures suitable for use as abradable seals are rendered oxidation resistant and thus suitable for high temperature service by introducing into the porous structure an intermetallic compound of aluminum with one of chromium, titanium, cobalt and nickel, which compound is then thermally reacted with the porous metal structures to form an aluminum alloy in the structure.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: February 17, 1981
    Assignee: Union Carbide Corporation
    Inventor: Raymond V. Sara
  • Deformation process for producing stress relieved metal/ceramic abradable seals
    Patent number: 4243169
    Abstract: Metal/ceramic abradable seals of the type used in jet aircraft are improved by using a substrate which is able to deform during cooling from the brazing temperature and then rendering the substrate rigid after the cool down.
    Type: Grant
    Filed: December 27, 1978
    Date of Patent: January 6, 1981
    Assignee: Union Carbide Corporation
    Inventor: Raymond V. Sara
  • Stress relieving of metal/ceramic abradable seals
    Patent number: 4194673
    Abstract: Metal/ceramic abradable seals of the type used in jet aircraft are improved by maintaining a temperature differential between the metal/ceramic composite and the cooler substrate during cooling from the brazing temperature.
    Type: Grant
    Filed: November 9, 1977
    Date of Patent: March 25, 1980
    Assignee: Union Carbide Corporation
    Inventors: Raymond J. Elbert, Raymond V. Sara
  • Oxidation resistant porous abradable seal member for high temperature service
    Patent number: 4155755
    Abstract: Porous abradable sintered metal structures suitable for use as abradable seals are rendered oxidation resistant and thus suitable for high temperature service by introducing into the porous structure an intermetallic compound of aluminum with one of chromium, titanium, cobalt and nickel, which compound is then thermally reacted with the porous metal structures to form an aluminum alloy in the structure.
    Type: Grant
    Filed: July 7, 1978
    Date of Patent: May 22, 1979
    Assignee: Union Carbide Corporation
    Inventor: Raymond V. Sara