Patents by Inventor Alexander J. Kolombos

Alexander J. Kolombos 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).

  • Isobutene by dehydroisomerization of normal butane
    Patent number: 4392003
    Abstract: This invention relates to a method of dehydroisomerizing n-butane by contacting at elevated temperatures a feedstock containing n-butanes with a catalyst composition containing a gallium compound on a support. The process affords a valuable method of producing iso-butene which is a basic chemical feedstock for a number of products including polyisobutenes, methacrolein and methyl tertiary butyl ether, to name a few. The last named compound can be prepared by reacting isobutene with methanol and is a convenient means of separating iso-butene from the products of the dehydroisomerization stage.
    Type: Grant
    Filed: June 8, 1981
    Date of Patent: July 5, 1983
    Assignee: The British Petroleum Company Limited
    Inventors: Alexander J. Kolombos, Clive D. Telford, Dennis Young
  • Process for converting C.sub.3 -C.sub.12 hydrocarbons to aromatics over gallia-activated zeolite
    Patent number: 4180689
    Abstract: This case relates to a process for producing aromatics by contacting a C.sub.3 -C.sub.8 hydrocarbon with a gallium catalyst supported on an aluminosilicate in which the ratio of silica to alumina is between 20:1 and 70:1.
    Type: Grant
    Filed: December 11, 1978
    Date of Patent: December 25, 1979
    Assignee: The British Petroleum Company Limited
    Inventors: Evan E. Davies, Alexander J. Kolombos
  • Zeolite composition
    Patent number: 4175057
    Abstract: This case relates to a process for producing aromatics by contacting a C.sub.3 -C.sub.8 hydrocarbon with a gallium catalyst supported on an aluminosilicate in which the ratio of silica to alumina is between 20:1 and 70:1.
    Type: Grant
    Filed: December 2, 1977
    Date of Patent: November 20, 1979
    Assignee: The British Petroleum Company Limited
    Inventors: Evan E. Davies, Alexander J. Kolombos