Patents by Inventor Marcus P. Borom

Marcus P. Borom 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 for removing Y.sub.2 O.sub.3 or Sm.sub.2 O.sub.3 cores from castings
    Patent number: 4119437
    Abstract: A weakly acid solution of either NH.sub.4 NO.sub.3, NH.sub.4 Cl, NH.sub.4 HSO.sub.4, CH.sub.3 COOH or equimolar CH.sub.3 COOH -- CH.sub.3 COONa is employed to remove cores of either Y.sub.2 O.sub.3 or Sm.sub.2 O.sub.3 from castings of advanced superalloy materials. A molten salt bath may be used thereafter to remove reaction products formed by the reaction of the materials of the core and the metal casting.
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: October 10, 1978
    Assignee: General Electric Company
    Inventors: Ronald H. Arendt, Irvin C. Huseby, Marcus P. Borom
  • Magnesia doped alumina core material
    Patent number: 4102689
    Abstract: Alumina doped with from 1 mole percent up to about 20 mole percent magnesia is suitable for use as a core material for casting and directional solidification of advanced super-alloys. The core material is leachable in KOH and NaOH in an autoclave at an elevated temperature and elevated pressure.
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: July 25, 1978
    Assignee: General Electric Company
    Inventor: Marcus P. Borom
  • Molten salt leach for removal of inorganic cores from directionally solidified eutectic alloy structures
    Patent number: 4082566
    Abstract: Cores made of either Y.sub.2 O.sub.3, Y.sub.3 Al.sub.5 O.sub.12, LaAlO.sub.3, MgAl.sub.2 O.sub.4 or Al.sub.2 O.sub.3 are removed from castings of advanced superalloy materials by immersion in a molten salt bath of either Li.sub.3 AlF.sub.6 or a mixture of CaF.sub.2 -- NaF.
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: April 4, 1978
    Assignee: General Electric Company
    Inventors: Ronald H. Arendt, Marcus P. Borom, Irvin C. Huseby, Frederic J. Klug
  • Method for removing a magnesia doped alumina core material
    Patent number: 4073662
    Abstract: Ceramic mold and core materials of magnesia doped alumina are removed from castings by a solution of either KOH or NaOH at elevated temperatures and pressures in an autoclave.
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: February 14, 1978
    Assignee: General Electric Company
    Inventor: Marcus P. Borom