Patents by Inventor Joseph Biscardi

Joseph Biscardi 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: 8431014
    Abstract: The invention provides for a process for dewaxing a waxy hydrocarbon feedstock to form a lubricant oil. The invention is also directed to a catalyst system comprising a hydrotreating catalyst upstream of a dewaxing catalyst, used in the dewaxing of a waxy hydrocarbon feedstock to form a lubricant oil. In particular, the invention is directed to a process and catalyst system designed to maintain yield of lubricant oil product. Specifically, the yield of lubricant oil does not decrease more than 2%, at a target pour point, over a dewaxing temperature range. The hydrotreating catalyst helps prevent aging of the dewaxing catalyst and maintains lubricant oil product yield at a target pour point over a wide temperature range. The hydrotreating catalyst comprises platinum, palladium, or combinations thereof on a low acidity inorganic oxide support where acidity is measured by a decalin conversion of less than 10% at 700° F.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: April 30, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Kamala R. Krishna, James N. Ziemer, Andrew Rainis, Joseph A. Biscardi, Thomas V. Harris
  • Publication number: 20110079540
    Abstract: The invention provides for a process for dewaxing a waxy hydrocarbon feedstock to form a lubricant oil. The invention is also directed to a catalyst system comprising a hydrotreating catalyst upstream of a dewaxing catalyst, used in the dewaxing of a waxy hydrocarbon feedstock to form a lubricant oil. In particular, the invention is directed to a process and catalyst system designed to maintain yield of lubricant oil product. Specifically, the yield of lubricant oil does not decrease more than 2%, at a target pour point, over a dewaxing temperature range. The hydrotreating catalyst helps prevent aging of the dewaxing catalyst and maintains lubricant oil product yield at a target pour point over a wide temperature range. The hydrotreating catalyst comprises platinum, palladium, or combinations thereof on a low acidity inorganic oxide support where acidity is measured by a decalin conversion of less than 10% at 700° F.
    Type: Application
    Filed: October 6, 2009
    Publication date: April 7, 2011
    Inventors: Kamala R. Krishna, James N. Ziemer, Andrew Rainis, Joseph A. Biscardi, Thomas V. Harris
  • Patent number: 7569507
    Abstract: The invention is directed to a method of making a small crystal SSZ-32 zeolite, known as SSZ-32X. The catalyst is suitable for use in a process whereby a feed including straight chain and slightly branched paraffins having 10 or more carbon atoms is dewaxed to produce an isomerized product, with increased yield of isomerized material and decreased production of light ends.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: August 4, 2009
    Assignee: Chevron U.S.A., Inc.
    Inventors: Stacey I. Zones, Guang Zhang, Kamala Krishna, Joseph A. Biscardi, Paul Marcantonio, Euthimios Vittoratos
  • Publication number: 20090163353
    Abstract: The invention is directed to an isomerization catalyst containing an intermediate pore size molecular sieve, a metal or metals selected from the group consisting of Ca, Cr, Mg, La, Ba, Pr, Sr, K and Nd which are effective in raising the isomerization selectivity, and additionally loaded with a Group VIII metal or metals for hydrogenation purposes.
    Type: Application
    Filed: February 25, 2009
    Publication date: June 25, 2009
    Inventors: Joseph A. Biscardi, Darren P. Fong, Paul Marcantonio
  • Patent number: 7468126
    Abstract: The invention is directed to a method of making a small crystal SSZ-32 zeolite, known as SSZ-32X. The catalyst is suitable for use in a process whereby a feed including straight chain and slightly branched paraffins having 10 or more carbon atoms is dewaxed to produce an isomerized product, with increased yield of isomerized material and decreased production of light ends.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: December 23, 2008
    Assignee: Chevron U.S.A., Inc.
    Inventors: Stacey I. Zones, Guang Zhang, Kamala Krishna, Joseph A. Biscardi, Paul Marcantonio, Euthimios Vittoratos
  • Patent number: 7390394
    Abstract: The invention is directed to a method of making a catalyst comprising an intermediate pore size molecular sieve, preferably a zeolite of the MTT or TON type. SSZ-32 and ZSM-22 are examples of such molecular sieves. This catalyst is modified with a metal or metals selected from the group consisting of Ca, Cr, Mg, La, Ba, Pr, Sr, K and Nd. The catalyst is additionally loaded with a Group VIII metal or metals for hydrogenation purposes. The catalyst is suitable for use in a process whereby a feed including straight chain and slightly branched paraffins having 10 or more carbon atoms is isomerized.
    Type: Grant
    Filed: December 13, 2004
    Date of Patent: June 24, 2008
    Assignee: Chevron U.S.A. Inc.
    Inventors: Joseph A. Biscardi, Darren P. Fong, Paul Marcantonio
  • Patent number: 7390763
    Abstract: The invention is directed to a method of making a small crystal SSZ-32 zeolite, known as SSZ-32X. The catalyst is suitable for use in a process whereby a feed including straight chain and slightly branched paraffins having 10 or more carbon atoms is dewaxed to produce an isomerized product, with increased yield of isomerized material and decreased production of light ends.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: June 24, 2008
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Guang Zhang, Kamala R. Krishna, Joseph A. Biscardi, Paul Marcantonio, Euthimios Vittoratos
  • Publication number: 20070048214
    Abstract: The invention is directed to a method of making a small crystal SSZ-32 zeolite, known as SSZ-32X. The catalyst is suitable for use in a process whereby a feed including straight chain and slightly branched paraffins having 10 or more carbon atoms is dewaxed to produce an isomenized product, with increased yield of isomerized material and decreased production of light ends.
    Type: Application
    Filed: August 24, 2006
    Publication date: March 1, 2007
    Inventors: Stacey Zones, Guang Zhang, Kamala Krishna, Joseph Biscardi, Paul Marcantonio, Euthimios Vittoratos
  • Publication number: 20070041898
    Abstract: The invention is directed to a method of making a small crystal SSZ-32 zeolite, known as SSZ-32X. The catalyst is suitable for use in a process whereby a feed including straight chain and slightly branched paraffins having 10 or more carbon atoms is dewaxed to produce an isomerized product, with increased yield of isomerized material and decreased production of light ends.
    Type: Application
    Filed: August 24, 2006
    Publication date: February 22, 2007
    Inventors: Stacey Zones, Guang Zhang, Kamala Krishna, Joseph Biscardi, Paul Marcantonio, Euthimios Vittoratos
  • Patent number: 7141529
    Abstract: The invention is directed to a method of making a catalyst comprising an intermediate pore size molecular sieve, preferably a zeolite of the MTT or TON type. SSZ-32 and ZSM-22 are examples of such molecular sieves. This catalyst is modified with a metal or metals selected from the group consisting of Ca, Cr, Mg, La, Ba, Pr, Sr, K and Nd. The catalyst is additionally loaded with a Group VII metal or metals for hydrogenation purposes. The catalyst is suitable for use in a process whereby a feed including straight chain and slightly branched paraffins having 10 or more carbon atoms is isomerized.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: November 28, 2006
    Assignee: Chevron U.S.A. Inc.
    Inventors: Joseph A. Biscardi, Darren P. Fong, Paul Marcantonio
  • Publication number: 20060229193
    Abstract: The invention is directed to a method of making a catalyst comprising an intermediate pore size molecular sieve, preferably a zeolite of the MTT or TON type. SSZ-32 and ZSM-22 are examples of such molecular sieves. This catalyst is modified with a metal or metals selected from the group consisting of Ca, Cr, Mg, La, Ba, Pr, Sr, K and Nd. The catalyst is additionally loaded with a Group VIII metal or metals for hydrogenation purposes. The catalyst is suitable for use in a process whereby a feed including straight chain and slightly branched paraffins having 10 or more carbon atoms is isomerized.
    Type: Application
    Filed: June 7, 2006
    Publication date: October 12, 2006
    Inventors: Joseph Biscardi, Darren Fong, Paul Marcantonio
  • Publication number: 20050155907
    Abstract: The invention is directed to a method of making a catalyst comprising an intermediate pore size molecular sieve, preferably a zeolite of the MTT or TON type. SSZ-32 and ZSM-22 are examples of such molecular sieves. This catalyst is modified with a metal or metals selected from the group consisting of Ca, Cr, Mg, La, Ba, Pr, Sr, K and Nd. The catalyst is additionally loaded with a Group VIII metal or metals for hydrogenation purposes. The catalyst is suitable for use in a process whereby a feed including straight chain and slightly branched paraffins having 10 or more carbon atoms is isomerized.
    Type: Application
    Filed: December 13, 2004
    Publication date: July 21, 2005
    Inventors: Joseph Biscardi, Darren Fong, Paul Marcantonio
  • Publication number: 20050092651
    Abstract: The invention is directed to a method of making a small crystal SSZ-32 zeolite, known as SSZ-32X. The catalyst is suitable for use in a process whereby a feed including straight chain and slightly branched paraffins having 10 or more carbon atoms is dewaxed to produce an isomerized product, with increased yield of isomerized material and decreased production of light ends.
    Type: Application
    Filed: October 31, 2003
    Publication date: May 5, 2005
    Inventors: Stacey Zones, Guang Zhang, Kamala Krishna, Joseph Biscardi, Paul Marcantonio, Euthimios Vittoratos
  • Publication number: 20040186006
    Abstract: The invention is directed to a method of making a catalyst comprising an intermediate pore size molecular sieve, preferably a zeolite of the MTT or TON type. SSZ-32 and ZSM-22 are examples of such molecular sieves. This catalyst is modified with a metal or metals selected from the group consisting of Ca, Cr, Mg, La, Ba, Pr, Sr, K and Nd. The catalyst is additionally loaded with a Group VII metal or metals for hydrogenation purposes. The catalyst is suitable for use in a process whereby a feed including straight chain and slightly branched paraffins having 10 or more carbon atoms is isomerized.
    Type: Application
    Filed: March 21, 2003
    Publication date: September 23, 2004
    Applicant: Chevron U.S.A. Inc.
    Inventors: Joseph A. Biscardi, Darren P. Fong, Paul Marcantonio
  • Patent number: 6773578
    Abstract: Lube base stocks and lube stock compositions, as well as a process for preparing lube base stocks and lube stock compositions, are disclosed. The lube oils preferably have a viscosity index above about 115. The process involves obtaining feedstocks that have a 95% point below 1150° F. and feedstocks that have 95% point above 1150° F. The feedstocks that have a 95% point below 1150° F. are catalytically dewaxed, and the feedstocks that have 95% point above 1150° F. are solvent dewaxed. The resulting products can optionally be blended, and the base stocks can be combined with various additives to form lube oil compositions. Hydrotreatment can optionally be performed on the lube base stocks to remove olefins, oxygenates and other impurities. In one embodiment, one or more of the fractions are obtained from Fischer-Tropsch synthesis.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: August 10, 2004
    Assignee: Chevron U.S.A. Inc.
    Inventors: Dennis J. O'Rear, Joseph A. Biscardi
  • Patent number: 6579441
    Abstract: A base oil feed having a tendency to form a haze at ambient or sub-ambient temperatures is contacted with a solid adsorbent to remove at least a portion of the haze precursors, thereby reducing the haze-forming tendency of the base oil feed.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: June 17, 2003
    Assignee: Chevron U.S.A. Inc.
    Inventors: Joseph A. Biscardi, Darren P. Fong
  • Patent number: 6468417
    Abstract: A dewaxed oil having a tendency to form a haze at ambient or sub-ambient temperatures is contacted with a solid adsorbent to remove at least a portion of the haze precursors, thereby reducing the haze-forming tendency of the dewaxed oil.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: October 22, 2002
    Assignee: Chevron U.S.A. Inc.
    Inventors: Joseph A. Biscardi, Kamala R. Krishna, John M. Rosenbaum, Nadine L. Yenni, R. Larry Howell
  • Patent number: 6468418
    Abstract: A base oil feed having a tendency to form a haze at ambient or sub-ambient temperatures is contacted with a solid adsorbent to remove at least a portion of the haze precursors, thereby reducing the haze-forming tendency of the base oil feed.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: October 22, 2002
    Assignee: Chevron U.S.A. Inc.
    Inventors: Joseph A. Biscardi, Kamala R. Krishna, John M. Rosenbaum, Nadine L. Yenni, R. Larry Howell, Krishnia Parimi