Patents by Inventor Curtis Homer Elliott, Jr.

Curtis Homer Elliott, Jr. 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).

  • Hydrosol and catalyst preparation
    Patent number: 4111846
    Abstract: Titania-alumina-silica hydrosols are prepared by reacting titanium and aluminum salts with an alkaline metal silicate solution at a pH of about 3. The hydrosol compositions may be dried to form inorganic-titania-alumina-silica gels or the hydrosols may be used as inorganic binders for the preparation of catalyst compositions which may contain clay and zeolites.
    Type: Grant
    Filed: August 17, 1977
    Date of Patent: September 5, 1978
    Assignee: W. R. Grace & Co.
    Inventor: Curtis Homer Elliott, Jr.
  • Copolymerized silica hydrosol bound cracking catalysts
    Patent number: 4107088
    Abstract: A process for modifying the silica hydrosol used to bind zeolite clay catalysts by adding salts of titania, zirconia, iron or ceria to the silica hydrosol in the course of preparation is disclosed. This addition alters the physical characteristics of catalyst when titania and zirconia salts are added and alters the matrix activity when quadrivalent cerium salts or iron salts are added to the silica hydrosol.
    Type: Grant
    Filed: May 6, 1977
    Date of Patent: August 15, 1978
    Assignee: W. R. Grace & Co.
    Inventor: Curtis Homer Elliott, Jr.
  • Silica hydrosol bound cracking catalysts
    Patent number: 4022714
    Abstract: A process for modifying the silica hydrosol used to bind zeolite clay catalysts by adding salts of titania, zirconia, iron or ceria to the silica hydrosol in the course of preparation is disclosed. This addition alters the physical characteristics of catalyst when titania and zirconia salts are added and alters the matrix activity when quadrivalent cerium salts or iron salts are added to the silica hydrosol.
    Type: Grant
    Filed: July 17, 1975
    Date of Patent: May 10, 1977
    Assignee: W. R. Grace & Co.
    Inventor: Curtis Homer Elliott, Jr.
  • Fluid cracking catalyst based on silica sol matrix
    Patent number: 3972835
    Abstract: A process for preparing a hydrocarbon cracking catalyst is disclosed. The process consists of preparing a silica sol by passing sodium silicate through an ion exchange resin column to form a silica sol containing about 5% silica. Clay and zeolitic components are added and the product is spray dried. This process is advantageous in that it produces a more dense and hence more attrition resistant catalyst.
    Type: Grant
    Filed: April 23, 1974
    Date of Patent: August 3, 1976
    Assignee: W. R. Grace & Co.
    Inventors: Gordon H. Hoffman, Richard J. Nozemack, Curtis Homer Elliott, Jr.
  • Process for preparing an attrition resistant zeolite hydrocarbon conversion catalyst
    Patent number: 3957689
    Abstract: A process for preparing a hydrocarbon cracking catalyst which consists of preparing a silica hydrosol, adjusting the pH of the sol and at the same time buffering the sol by adding an aluminum sulfate solution, adding clay and zeolitic components, spray drying, washing with water, rare earth exchanging if desired and recovering the product. The catalyst is characterized by excellent attrition resistance and activity.
    Type: Grant
    Filed: August 2, 1974
    Date of Patent: May 18, 1976
    Assignee: W. R. Grace & Co.
    Inventors: John Joseph Ostermaier, Curtis Homer Elliott, Jr.