Patents by Inventor Lee Adrian Donohue

Lee Adrian Donohue 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).

  • Hard material coating with yttrium and method for its deposition
    Patent number: 6033768
    Abstract: Ternary hard material layers are described to which a small proportion of yttrium is added to increase the resistance to wear at elevated temperatures.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: March 7, 2000
    Assignee: Hauzer Industries BV
    Inventors: Wolf-Dieter Muenz, Ian Smith, Lee Adrian Donohue, John Stuart Brooks
  • Method of coating metallic and ceramic substrates
    Patent number: 6033734
    Abstract: The invention is concerned with a reduction of the surface roughness of titanium-aluminum-nitride hard material layers produced by the combined cathodic arc discharge vaporization process and the imbalanced magnetron coating process (ABS method) or by the pure cathodic arc discharge vaporization process.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: March 7, 2000
    Assignee: Hauzer Industries B.V.
    Inventors: Wolf-Dieter Muenz, Iain James Smith, Lee Adrian Donohue, John Stuart Brooks