Patents by Inventor Peter G. Miasek

Peter G. Miasek 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: 4532029
    Abstract: The present invention is directed to a process for producing high quality aromatic solvents in the middle distillate range containing 95.sup.+ % aromatics by contacting the liquid feed with a perm selective membrane under pressure thereby selectively permeating the aromatic components as the high quality solvents. This separation can be performed by contacting the feed stream in combination with a low boiling light polar aromatics extraction solvent (such as acetonitrile) with the membrane. The middle distillate feed has a molecular weight range of about 120 to 250 g/mole and an aromatic content of 75 to 90 volume percent aromatics and preferably 80 to 90 volume percent aromatics. The membranes which can be employed to effect this separation are selected from the group of regenerated cellulose, cellulose acetate and polyimide membranes, preferably the polyimide membranes.
    Type: Grant
    Filed: April 27, 1984
    Date of Patent: July 30, 1985
    Assignee: Exxon Research and Engineering Co.
    Inventors: Laura E. Black, Peter G. Miasek, Georges Adriaens
  • Patent number: 4147612
    Abstract: Alkali metal sulfides are regenerated from alkali metal hydrosulfides which are produced as a result of the hydroconversion of heavy carbonaceous feeds. The regeneration is effected by contacting the alkali metal hydrosulfide with a metal oxide at elevated temperatures.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: April 3, 1979
    Assignee: Imperial Oil Enterprises Ltd.
    Inventors: Peter G. Miasek, John J. Dugan
  • Patent number: 4147611
    Abstract: Alkali metal sulfides are regenerated from alkali metal hydrosulfides which are produced as a result of the hydroconversion of heavy carbonaceous feeds. The regeneration is effected by treating the spent solids from a hydroconversion reactor, said solids containing an alkali metal hydrosulfide, with water and carbon dioxide at a temperature and pressure sufficient to convert about 50% of the alkali metal hydrosulfide to an alkali metal carbonate, and heating a mixture of said alkali metal carbonate and unreacted alkali metal hydrosulfide with a quantity of coke to an elevated temperature sufficient to cause reaction of the hydrosulfide with the carbonate whereby an alkali metal sulfide is formed.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: April 3, 1979
    Assignee: Imperial Oil Enterprises Ltd.
    Inventors: Peter G. Miasek, John J. Dugan