Patents by Inventor Gerald R. Feistel

Gerald R. Feistel 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).

  • Polycarboxylic acids as extrusion aids for silica-aluminas
    Patent number: 4174301
    Abstract: Silica-alumina powders can be extruded into catalyst supports having improved properties by the addition of up to 15% by weight of a polycarboxylic acid, containing 2-10 carbon atoms, based on the dry weight of the powder to the silica-alumina powders prior to extrusion. The addition of the polycarboxylic acid also increases the extrusion rate.
    Type: Grant
    Filed: September 22, 1978
    Date of Patent: November 13, 1979
    Assignee: Nalco Chemical Company
    Inventors: Monica E. Choca, Gerald R. Feistel
  • Process for preparing phosphorous-alumina catalysts using polycarboxylic acids as extrusion aids
    Patent number: 4132669
    Abstract: Alumina-phosphorous powders can be extruded into catalysts supports having improved properties by the addition of up to 15% by weight of a polycarboxylic acid, containing 2-10 carbon atoms, based on the dry weight of the alumina-phosphorous powder prior to extrusion. The addition of the polycarboxylic acid also increases the extrusion rate.
    Type: Grant
    Filed: October 6, 1977
    Date of Patent: January 2, 1979
    Assignee: Nalco Chemical Company
    Inventors: Monica E. Choca, Gerald R. Feistel
  • Silica-alumina and silica catalyst support bodies
    Patent number: 4111843
    Abstract: Porous silica particles useful in catalysis are prepared by adding excess alkali to a body of water glass; the excess alkali is responsible for increasing the pore diameter.
    Type: Grant
    Filed: May 6, 1977
    Date of Patent: September 5, 1978
    Assignee: Nalco Chemical Company
    Inventors: Gerald R. Feistel, George N. Pessimisis
  • Silica-alumina catalysts
    Patent number: 4039474
    Abstract: Porous silica-alumina products useful in catalysis are prepared by adding excess alkali to a body of water glass, the excess alkali is responsible for rendering the product extrudable and for increasing the pore diameter.
    Type: Grant
    Filed: October 20, 1975
    Date of Patent: August 2, 1977
    Assignee: Nalco Chemical Company
    Inventors: Gerald R. Feistel, George N. Pessimisis