Patents by Inventor John I. Hammerman

John I. Hammerman 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).

  • Patent number: 5599956
    Abstract: Propylene oxide may be produced by an integrated process utilizing as a basic feedstock a refinery stream containing saturated hydrocarbons. The first element of the process converts one or more of the saturated hydrocarbons to a stream containing propylene and hydrogen using steam cracking, catalytic cracking, or preferably catalytic dehydrogenation. Hydrogen and propylene are separated, and the hydrogen is employed in a reaction cycle affording hydrogen peroxide. The latter is then used to epoxidize propylene in the presence of a suitable catalyst, especially a titanosilicate.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: February 4, 1997
    Assignee: UOP
    Inventors: Peter R. Pujado, John I. Hammerman
  • Patent number: 5569791
    Abstract: Phenol is produced from a hydrocarbon feedstock using a process combination offering unexpected synergy. Benzene is produced from the hydrocarbon feedstock using a highly selective aromatization catalyst which provides substantial quantities of high-purity hydrogen. The hydrogen is converted to hydrogen peroxide, which in turn is used to convert the benzene to phenol in high yield.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: October 29, 1996
    Assignee: UOP
    Inventors: John I. Hammerman, Peter R. Pujado
  • Patent number: 5559274
    Abstract: Phenol is produced from a hydrocarbon feedstock using a process combination offering unexpected synergy. Benzene is produced from the hydrocarbon feedstock using a highly selective aromatization catalyst which provides substantial quantities of high-purity hydrogen. The hydrogen is converted to hydrogen peroxide, which in turn is used to convert the benzene to phenol in high yield.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: September 24, 1996
    Assignee: UOP
    Inventors: John I. Hammerman, Peter R. Pujado
  • Patent number: 4040979
    Abstract: A catalytic composite, comprising a combination of a nickel component and a tungsten component with a silica-alumina carrier material wherein the atomic ratio of nickel to nickel plus tungsten is about 0.1 to about 0.3. The key feature of the subject composite is the criticality of the ratio of nickel to nickel plus tungsten. The principal utility of the subject composite is in the hydrocracking of hydrocarbons. A specific example of the catalyst disclosed is a combination of nickel and tungsten with a silica-alumina carrier material containing 50 wt.% alumina in amounts sufficient to result in the composite having an atomic ratio of nickel to nickel plus tungsten of 0.2.
    Type: Grant
    Filed: February 23, 1976
    Date of Patent: August 9, 1977
    Assignee: UOP Inc.
    Inventors: Stanley A. Gembicki, John I. Hammerman