Patents by Inventor Wayne D. Pasco

Wayne D. Pasco 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).

  • Alumina core having a high degree of porosity and crushability characteristics
    Patent number: 4184885
    Abstract: A fired alumina article having a core of material having from 20 to 65 percent continuous porosity by volume and desired crushability characteristics and an integral outer barrier layer consisting of porous alumina having a density gradient.
    Type: Grant
    Filed: January 25, 1979
    Date of Patent: January 22, 1980
    Assignee: General Electric Company
    Inventors: Wayne D. Pasco, Frederic J. Klug
  • Alumina core having a high degree of porosity and crushability characteristics
    Patent number: 4164424
    Abstract: A core for investment casting directionally solidified eutectic and superalloy material consists of alumina which has a porous microstructure in which the grain morphology is characteristic of grains which have undergone vapor phase transport action.
    Type: Grant
    Filed: October 6, 1977
    Date of Patent: August 14, 1979
    Assignee: General Electric Company
    Inventors: Frederic J. Klug, Wayne D. Pasco, Svante Prochazka
  • Alumina core for casting DS materials
    Patent number: 4108672
    Abstract: An alumina core for investment casting directionally solidified eutectic and superalloy materials consists of a central portion which has porosity which is continuous throughout. The material of the central portion has a micro-structure which is characteristic of alumina grains which have undergone vapor phase transport action. An outer layer of alumina encompasses the central portion and in integral therewith and contains porosity which is discontinuous.
    Type: Grant
    Filed: October 6, 1977
    Date of Patent: August 22, 1978
    Assignee: General Electric Company
    Inventors: Frederic J. Klug, Wayne D. Pasco