Patents by Inventor Gregory J. Gajda

Gregory J. Gajda 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).

  • Pentene isomerization process
    Patent number: 5367101
    Abstract: An improved process is disclosed for the isomerization of pentenes in the absence of hydrogen using a catalyst comprising a non-zeolitic molecular sieve. It is of particular interest to increase the proportion of olefins containing tertiary carbons in the product with low formation of undesirable by-products. Product olefins may be further processed to obtain methyl t-amyl ether, which enjoy high current interest as components for reformulated gasoline. Pentenes in raffinate from etherification may be returned to the isomerization process.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: November 22, 1994
    Assignee: UOP
    Inventors: Randy J. Lawson, Dorothy M. Richmond, Gregory J. Gajda, Paul T. Barger
  • Olefin isomerization process
    Patent number: 5365008
    Abstract: An improved process is disclosed for the isomerization of butenes and/or pentenes using a catalyst comprising a silicoaluminophosphate molecular sieve containing noncondensed silica. It is of particular interest to increase the proportion of olefins containing tertiary carbons in the product with low formation of undesirable by-products. Product olefins may be further processed to obtain ethers, which enjoy high current interest as components for reformulated gasoline.
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: November 15, 1994
    Assignee: UOP
    Inventors: Paul T. Barger, R. Lyle Patton, David A. Lesch, Lorenz J. Bauer, Gregory J. Gajda
  • Olefin isomerization process
    Patent number: 5336831
    Abstract: An improved process is disclosed for the isomerization of butenes and/or pentenes using a catalyst comprising a non-zeolitic molecular sieve. It is of particular interest to increase the proportion of olefins containing tertiary carbons in the product with low formation of undesirable by-products. Product olefins may be further processed to obtain ethers, which enjoy high current interest as components for reformulated gasoline.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: August 2, 1994
    Assignee: UOP
    Inventors: Gregory J. Gajda, Paul T. Barger, Hayim Abrevaya
  • Pentene isomerization and etherification
    Patent number: 5292984
    Abstract: An improved process is disclosed for the isomerization of pentenes using a catalyst comprising a non-zeolitic molecular sieve. It is of particular interest to increase the proportion of olefins containing tertiary carbons in the product with low formation of undesirable by-products. Product olefins may be further processed to obtain methyl t-amyl ether, which enjoy high current interest as components for reformulated gasoline. Pentenes in raffinate from etherification may be returned to the isomerization process.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: March 8, 1994
    Assignee: UOP
    Inventors: Gregory J. Gajda, Paul T. Barger
  • Discrete molecular sieve and use
    Patent number: 5276236
    Abstract: This invention presents a novel MgAPSO molecular sieve, containing a critical range of magnesium in the sieve framework, which is particularly active for hydrocarbon conversion. The sieve advantageously is incorporated, along with a platinum-group metal, into a catalyst formulation which is useful for isomerization. When utilized in a process for isomerizing a non-equilibrium mixture of xylenes containing ethylbenzene, a greater yield of para-xylene is obtained compared to prior-art processes.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: January 4, 1994
    Assignee: UOP
    Inventors: Robert L. Patton, Stephen T. Wilson, Gregory J. Gajda
  • Process for isomerizing olefins in gasoline streams
    Patent number: 5254789
    Abstract: An improved process is disclosed for the isomerization of olefins in gasoline-range streams using a medium-pore molecular-sieve catalyst. The process features high yields of C.sub.5 + isomerized product and avoids conversion of paraffin isomers to equilibrium values.
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: October 19, 1993
    Assignee: UOP
    Inventor: Gregory J. Gajda
  • Discrete molecular sieve and use
    Patent number: 5240891
    Abstract: This invention presents a novel MgAPSO molecular sieve, containing a critical range of magnesium in the sieve framework, which is particularly active for hydrocarbon conversion. The sieve advantageously is incorporated, along with a platinum-group metal, into a catalyst formulation which is useful for isomerization. When utilized in a process for isomerizing a non-equilibrium mixture of xylenes containing ethylbenzene, a greater yield of para-xylene is obtained compared to prior-art processes.
    Type: Grant
    Filed: December 26, 1991
    Date of Patent: August 31, 1993
    Inventors: Robert L. Patton, Stephen T. Wilson, Gregory J. Gajda
  • Olefin isomerization process
    Patent number: 5191146
    Abstract: An improved process is disclosed for the isomerization of butenes, pentenes, and heavier olefins using a catalyst comprising a non-zeolitic molecular sieve. It is of particular interest to increase the proportion of olefins containing tertiary carbons in the product with low formation of undesirable by-products. Product olefins may be further processed to obtain ethers, which enjoy high current interest as components for reformulated gasoline.
    Type: Grant
    Filed: December 30, 1991
    Date of Patent: March 2, 1993
    Assignee: UOP
    Inventors: Gregory J. Gajda, Paul T. Barger
  • Process for producing oxygenated gasoline
    Patent number: 5157178
    Abstract: An improved process combination is disclosed for the production of an oxygenated gasoline component from an FCC gasoline feed. Olefins in the cracked gasoline are isomerized using a medium-pore molecular-sieve catalyst to achieve high yields of C.sub.5 + isomerized gasoline and avoid conversion of highly branched paraffins to equilibrium values. The isomerized gasoline is etherified to obtain oxygenated gasoline.
    Type: Grant
    Filed: May 20, 1991
    Date of Patent: October 20, 1992
    Assignee: UOP
    Inventors: Gregory J. Gajda, Jule A. Rabo
  • Butene isomerization process
    Patent number: 5146035
    Abstract: An improved process is disclosed for the isomerization of butenes, using a catalyst comprising a non-zeolitic molecular sieve to increase the proportion of isobutene or of 1-butene in the product with low formation of undesirable by-products.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: September 8, 1992
    Assignee: UOP
    Inventors: Benjamin C. Spehlmann, Gail L. Gray, Lawrence D. Vail, Gregory J. Gajda
  • Butene isomerization process
    Patent number: 5132484
    Abstract: An improved process is disclosed for the isomerization of butenes, using a catalyst comprising a non-zeolitic molecular sieve to increase the proportion of isobutene or of 1-butene in the product with low formation of undesirable by-products.
    Type: Grant
    Filed: March 15, 1991
    Date of Patent: July 21, 1992
    Assignee: UOP
    Inventor: Gregory J. Gajda
  • Process for isomerizing olefins in gasoline streams
    Patent number: 5057635
    Abstract: An improved process is disclosed for the isomerization of olefins in gasoline streams using a medium-pore molecular-sieve catalyst. The process features high yields of C.sub.5 + isomerized product and avoids conversion of highly branched paraffins to equilibrium values.
    Type: Grant
    Filed: February 8, 1990
    Date of Patent: October 15, 1991
    Assignee: UOP
    Inventor: Gregory J. Gajda