Patents by Inventor Howard A. Katzman

Howard A. Katzman 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).

  • Diffusion barrier for high temperature composites
    Patent number: 4837053
    Abstract: Filaments are coated with MgO to create an effective diffusion barrier between the filament and the matrix in a metal matrix composite, thereby improving the strength and the service life of the composite.
    Type: Grant
    Filed: August 23, 1988
    Date of Patent: June 6, 1989
    Assignee: The Aerospace Corporation
    Inventors: Wei H. Kao, Howard A. Katzman, Eric M. Slater
  • Process for forming barium calcium aluminate dispenser cathode impregnants
    Patent number: 4752462
    Abstract: An improved process for fabricating barium calcium aluminum impregnants for dispenser cathodes is described. The resulting cathodes have improved lifetimes and reliability through the use of organometallic starting materials in the impregnant process.
    Type: Grant
    Filed: September 29, 1986
    Date of Patent: June 21, 1988
    Assignee: The Aerospace Corporation
    Inventors: Russell A. Lipeles, Howard A. Katzman
  • Carbide coatings for fabrication of carbon-fiber-reinforced metal matrix composites
    Patent number: 4737382
    Abstract: A carbon fiber reinforced metal matrix composite is produced by carbide coating the surface of the fibers by passing the fibers through an organometallic solution followed by pyrolysis of the organometallic compounds. The carbide coated fibers, so produced are readily wettable without degradation when immersed in a molten bath of metal matrix material containing an active alloying element.
    Type: Grant
    Filed: September 29, 1986
    Date of Patent: April 12, 1988
    Assignee: The Aerospace Corporation
    Inventor: Howard A. Katzman
  • Enhanced carbon fiber combustion using a catalyst
    Patent number: 4551487
    Abstract: A catalyst introduced into the filament of a carbon fiber to enhance thermal oxidation thereby ensuring complete combustion of the fiber along with its matrix in composites in an unanticipated or deliberate incineration.
    Type: Grant
    Filed: August 15, 1983
    Date of Patent: November 5, 1985
    Assignee: The Aerospace Corporation
    Inventors: Camille A. Gaulin, Howard A. Katzman
  • Pyrolyzed pitch coatings for carbon fiber
    Patent number: 4376804
    Abstract: Carbon fibers in a carbon-fiber-reinforced metal-matrix composite having a relatively very high modulus are treated with a relatively thin amorphous carbon coating precedent to a metal-oxide film to improve the adhesion thereof to the carbon fiber thereby facilitating the wetting of carbon fibers to molten matrix metal.
    Type: Grant
    Filed: August 26, 1981
    Date of Patent: March 15, 1983
    Assignee: The Aerospace Corporation
    Inventor: Howard A. Katzman
  • Carbon-reinforced metal-matrix composites
    Patent number: 4376803
    Abstract: A carbon fiber reinforced metal matrix composite is produced by metal oxide coating the surface of the fibers by passing the fibers through an organometallic solution followed by pyrolysis or hydrolysis of the organometallic compounds. The metal oxide coated fibers so produced are readily wettable without degradation when immersed in a molten bath of the metal matrix material.
    Type: Grant
    Filed: August 26, 1981
    Date of Patent: March 15, 1983
    Assignee: The Aerospace Corporation
    Inventor: Howard A. Katzman