Patents by Inventor Harold H. Hirsch

Harold H. Hirsch 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).

  • Molybdenum substrate for high power density tungsten focal track X-ray targets
    Patent number: 4298816
    Abstract: Improved rotary targets for X-ray tubes are provided which include a substrate body of a high strength molybdenum alloy, an intermediate ductile layer of pure molybdenum or a ductile molybdenum alloy affixed to the top surface thereof and an electron receiving layer made of a tungsten-based alloy affixed to at least a portion of the intermediate layer.
    Type: Grant
    Filed: January 2, 1980
    Date of Patent: November 3, 1981
    Assignee: General Electric Company
    Inventors: Harold H. Hirsch, Melvin R. Jackson
  • Method for producing high density and high conductivity metal pressings
    Patent number: 4227926
    Abstract: High density and high conductivity metal pressings of normally soft and reducible metals such as copper are produced by impregnating the voids of the metal pressing to permit all gases to be expelled before the pores are closed during the sintering operation.
    Type: Grant
    Filed: October 24, 1978
    Date of Patent: October 14, 1980
    Assignee: General Electric Company
    Inventor: Harold H. Hirsch
  • X-ray target with substrate of molybdenum alloy
    Patent number: 4195247
    Abstract: Rotary targets for X-ray tubes are provided comprising a molybdenum base body alloyed with a stabilizing proportion of iron, silicon, cobalt, tantalum, niobium, hafnium, stable metal oxide, or a mixture of the preceding.
    Type: Grant
    Filed: July 24, 1978
    Date of Patent: March 25, 1980
    Assignee: General Electric Company
    Inventor: Harold H. Hirsch
  • Flame spray oxidation and corrosion resistant superalloys
    Patent number: 4101713
    Abstract: A flame sprayed high energy milled powder coated article comprising a superalloy substrate and a coating consisting of chromium and at least one element selected from iron, cobalt or nickel. Optionally the coating can contain other elements, e.g., aluminum, carbon, yttrium or the rare earth elements.
    Type: Grant
    Filed: January 14, 1977
    Date of Patent: July 18, 1978
    Assignee: General Electric Company
    Inventors: Harold H. Hirsch, John R. Rairden, III