Patents by Inventor John G. Gatsis

John G. Gatsis 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).

  • Process for the liquefaction of coal and separation of solids from the product stream
    Patent number: 4082644
    Abstract: Production of a low mineral content fuel by a coal liquefaction process utilizing a hydrogenated coal solvent having been hydrogenated to remove at least about 80% of the asphaltenes which yields as the primary product a mixture of liquid and solids, a part of which is suspended in the liquid. The suspended solids are effectively removed with minimum loss of desired product by means of a light aromatic solvent in combination with a hydrogenated coal solvent.
    Type: Grant
    Filed: December 14, 1976
    Date of Patent: April 4, 1978
    Assignee: UOP Inc.
    Inventors: John G. Gatsis, Gim Tan
  • Process for the liquefaction of coal and separation of solids from the liquid product
    Patent number: 4081358
    Abstract: Production of a low mineral content fuel by a coal liquefaction process utilizing a hydrogenated coal solvent having been hydrogenated to remove at least about 80% of the asphaltenes which yields as the primary product a mixture of liquid and solids, a part of which is suspended in the liquid. The suspended solids are effectively removed with minimum loss of desired product by means of a light aromatic solvent in combination with a hydrogenated coal solvent having been hydrogenated to remove at least about 80% of the asphaltenes with a weight ratio of unreacted coal oil solvent to light aromatic solvent of from about 0.1 to about 1000.
    Type: Grant
    Filed: December 29, 1976
    Date of Patent: March 28, 1978
    Assignee: UOP Inc.
    Inventors: Gim Tan, John G. Gatsis
  • Process for the liquefaction of coal and separation of solids from the liquid product
    Patent number: 4081359
    Abstract: Production of a low mineral content fuel by a coal liquefaction process utilizing a hydrogenated coal solvent having been hydrogenated to remove at least about 80% of the asphaltenes which yields as the primary product a mixture of liquid and solids, a part of which is suspended in the liquid. The suspended solids are effectively removed with minimum loss of desired product by means of a light aromatic solvent in combination with a hydrogenated coal solvent.
    Type: Grant
    Filed: December 14, 1976
    Date of Patent: March 28, 1978
    Assignee: UOP Inc.
    Inventors: John G. Gatsis, Gim Tan
  • Method for suppressing asphaltene formation during coal liquefaction and separation of solids from the liquid product
    Patent number: 4081360
    Abstract: A method for suppressing asphaltene formation during coal liquefaction utilizing a hydrogenated coal solvent having been hydrogenated to remove at least about 80% of the asphaltenes which yields as the primary product a mixture of liquid and solids, a part of which is suspended in the liquid. The solids are effectively removed with a minimum loss of desired product and suppressed asphaltene formation by means of a light aromatic solvent in combination with a hydrogenated coal oil solvent having been hydrogenated to remove at least about 80% of the asphaltenes.
    Type: Grant
    Filed: December 29, 1976
    Date of Patent: March 28, 1978
    Assignee: UOP Inc.
    Inventors: Gim Tan, John G. Gatsis
  • Method for separating undissolved solids from a coal liquefaction product
    Patent number: 4079004
    Abstract: Production of a low mineral content fuel from a coal liquefaction product utilizing a hydrogenated coal oil solvent and a light aromatic solvent in combination to remove suspended mineral solids.
    Type: Grant
    Filed: December 14, 1976
    Date of Patent: March 14, 1978
    Assignee: UOP Inc.
    Inventors: Gim Tan, John G. Gatsis
  • Method for separating undissolved solids from a coal liquefaction product
    Patent number: 4079005
    Abstract: Production of a low mineral content fuel by a coal liquefaction process utilizing an asphaltene-free hydrogenated coal solvent which yields as the primary product a mixture of liquid and solids, a part of which is suspended in the liquid. The suspended solids are effectively removed with minimum loss of desired product by means of a light aromatic solvent in combination with a hydrogenated coal solvent, having been hydrogenated to remove at least about 80% of the asphaltenes.
    Type: Grant
    Filed: December 14, 1976
    Date of Patent: March 14, 1978
    Assignee: UOP Inc.
    Inventors: Gim Tan, John G. Gatsis
  • Process for the liquefaction of coal
    Patent number: 3997425
    Abstract: Production of a low mineral content fuel by a coal liquefaction process utilizing an asphaltene-free hydrogenated coal solvent which yields as the primary product a mixture of liquid and solids, a part of which is suspended in the liquid. The suspended solids are effectively removed with minimum loss of desired product by means of a light aromatic solvent in combination with an asphaltene-free hydrogenated coal solvent.
    Type: Grant
    Filed: December 26, 1974
    Date of Patent: December 14, 1976
    Assignee: Universal Oil Products Company
    Inventors: John G. Gatsis, Gim Tan
  • Two-stage hydroconversion of hydrocarbonaceous Black Oil
    Patent number: 3957622
    Abstract: Asphaltene-containing hydrocarbonaceous black oils are subjected to conversion conditions in a two-stage process. The physical characteristics of the catalytic composite disposed within the individual stages, or reaction zones, are different. This difference in physical characteristics is directed toward macropore volume, and is maintained whether the chemical composition is the same, or varies.
    Type: Grant
    Filed: August 5, 1974
    Date of Patent: May 18, 1976
    Assignee: Universal Oil Products Company
    Inventor: John G. Gatsis