Patents by Inventor Leon F. Koniz

Leon F. Koniz 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).

  • Novel method of testing a charge calcined alumina to determine its suitability for use in hydrocarbon conversion
    Patent number: 4231751
    Abstract: Alkylaromatic charge hydrocarbons such as toluene are steam dealkylated in the presence of catalyst which typically contains oxides of nickel, chromium, and potassium on an activated high-purity alumina. It is a feature of this invention that the high-purity alumina is activated by calcining followed by addition thereto of alkaline earth metal such as calcium or magnesium. A test is disclosed according to which it may be determined which high-purity aluminas are suitable for use.
    Type: Grant
    Filed: January 5, 1979
    Date of Patent: November 4, 1980
    Assignee: Texaco Inc.
    Inventors: Leon F. Koniz, John H. Estes
  • Novel method for dealkylating alkylaromatic hydrocarbons
    Patent number: 4171329
    Abstract: Alkylaromatic charge hydrocarbons such as toluene are steam dealkylated in the presence of catalyst which typically contains oxides of nickel, chromium, and potassium on an activated high-purity alumina. It is a feature of this invention that the high-purity alumina is activated by calcining followed by addition thereto of alkaline earth metal such as calcium or magnesium. A test is disclosed according to which it may be determined which high-purity aluminas are suitable for use.
    Type: Grant
    Filed: March 16, 1978
    Date of Patent: October 16, 1979
    Assignee: Texaco Inc.
    Inventors: Leon F. Koniz, John H. Estes
  • Process for dealkylating an alkylaromatic hydrocarbon using supported catalyst
    Patent number: 4147734
    Abstract: A novel active alumina which has been treated with sulfate ion, is found to be particularly characterized by increased performance when used as a support for catalyst which may be used in hydrocarbon conversion processes such as steam dealkylation.
    Type: Grant
    Filed: April 1, 1977
    Date of Patent: April 3, 1979
    Assignee: Texaco Inc.
    Inventors: Tansukhlal G. Dorawala, Edwin R. Kerr, Robert G. Kochis, Leon F. Koniz
  • Novel method for preparing a high purity alumina
    Patent number: 4139491
    Abstract: A novel active alumina which has been treated with sulfate ion, is found to be particularly characterized by increased performance when used as a support for catalyst which may be used in hydrocarbon conversion processes such as steam dealkylation.
    Type: Grant
    Filed: March 20, 1978
    Date of Patent: February 13, 1979
    Assignee: Texaco Inc.
    Inventors: Tansukhlal G. Dorawala, Edwin R. Kerr, Robert G. Kochis, Leon F. Koniz
  • Preparation of catalyst support
    Patent number: 4089811
    Abstract: Alumina, derived as by-product of the Zeigler-catalyzed higher alcohol process, is converted to beta alumina trihydrate and alpha alumina trihydrate in controlled proportions and thence to the catalytic transition aluminas.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: May 16, 1978
    Assignee: Texaco Inc.
    Inventors: Leon F. Koniz, John H. Estes