Patents by Inventor Donald S. Santilli

Donald S. Santilli 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 reducing haze point in bright stock
    Patent number: 6051129
    Abstract: A dewaxing process for lowering the haze point of a bright stock which includes contacting a bright stock in the presence of added hydrogen gas with a Zeolite EU-1 catalyst in combination with a ZSM-48 and/or SSZ-32 catalyst.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: April 18, 2000
    Assignee: Chevron U.S.A. Inc.
    Inventors: Thomas V. Harris, R. Norm Reynolds, Jr., Roger F. Vogel, Donald S. Santilli
  • Method of making 2,6-dimethylnaphthalene from other dimethylnaphthalene isomers and from dimethyltetralins/dimethyldecalins with a methyl group on each ring
    Patent number: 6015930
    Abstract: The invention discloses a method of making 2,6-dimethylnaphthalene from any DMN with one methyl on each ring in a two-step hydroisomerization/dehydrogenation process. The catalyst used in the hydroisomerization step is an acidic catalyst such as a silica aluminum catalyst with a hydrogenation/dehydrogenation metal. The catalyst used in the dehydrogenation step is a reforming type catalyst.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: January 18, 2000
    Assignee: Chevron Chemical Company
    Inventors: Donald S. Santilli, Cong-Yan Chen
  • Isomerization process using zeolite SSZ-25
    Patent number: 6005154
    Abstract: A crystalline zeolite SSZ-25 is prepared using an adamantane quaternary ammonium ion as a template.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: December 21, 1999
    Assignee: Chevron USA Inc.
    Inventors: Stacey I. Zones, Dennis L. Holtermann, Robert A. Innes, Theresa A. Pecoraro, Donald S. Santilli, James N. Ziemer
  • Low-Aluminum boron beta zeolite
    Patent number: 5693215
    Abstract: A crystalline low-aluminum boron beta zeolite is used for dewaxing hydrocarbonaceous feeds.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: December 2, 1997
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Dennis L. Holtermann, Lawrence W. Jossens, Donald S. Santilli, Andrew Rainis, James N. Ziemer
  • Alkylation process using zeolite SSZ-25
    Patent number: 5691463
    Abstract: A crystalline zeolite SSZ-25 is prepared using an adamantane quaternary ammonium ion as a template.
    Type: Grant
    Filed: July 16, 1996
    Date of Patent: November 25, 1997
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Dennis L. Holtermann, Robert A. Innes, Theresa A. Pecoraro, Donald S. Santilli, James N. Ziemer
  • Computer keyboard pointing device
    Patent number: 5675361
    Abstract: A device provides pointing device functions in a keyboard without requiring a keyboard operator to move his hands from their normal typing positions. Position sensitive elements at the top surfaces of a set of keys are used together to provide a large touch surface to allow accurate pointing. The position sensitive elements detect the position of a pointing object such as a finger on the top surfaces of these keys as an indication of information to be conveyed by the user.
    Type: Grant
    Filed: August 23, 1995
    Date of Patent: October 7, 1997
    Inventor: Donald S. Santilli
  • Hydrocarbon conversion processes using zeolite SSZ-41
    Patent number: 5656149
    Abstract: The present invention relates to new crystalline zeolite SSZ-41 which comprises oxides of (1) silicon or a mixture of silicon and germanium, and (2) zinc, said zinc being present in an amount from about 2 wt % to about 5 wt % of zinc metal based on the total weight of metals in said zeolite. Zeolite SSZ-41 may also optionally contain oxides of aluminum, iron, gallium or mixtures thereof. Zeolite SSZ-41 has the X-ray diffraction lines of Table I and has an argon adsorption capacity of at least about 0.06 cc/gm at 87.degree. K. Also disclosed are methods of making and using zeolite SSZ-41.
    Type: Grant
    Filed: May 21, 1996
    Date of Patent: August 12, 1997
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Donald S. Santilli
  • Low-aluminum boron beta zeolite
    Patent number: 5603821
    Abstract: A crystalline low-aluminum boron beta zeolite is prepared using a diquaternary ion as a template.
    Type: Grant
    Filed: September 28, 1994
    Date of Patent: February 18, 1997
    Assignee: Chevron Research Company
    Inventors: Lawrence W. Jossens, Donald S. Santilli, James N. Ziemer
  • Dewaxing process using zeolite SSZ-25
    Patent number: 5591322
    Abstract: A crystalline zeolite SSZ-25 is prepared using an adamantane quaternary ammonium ion as a template.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 7, 1997
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Dennis L. Holtermann, Robert A. Innes, Theresa A. Pecoraro, Donald S. Santilli, James N. Ziemer
  • Hydrocarbon conversion process using zeolite SSZ-25
    Patent number: 5421992
    Abstract: A crystalline zeolite SSZ-25 is prepared using an adamantane quaternary ammonium ion as a template.
    Type: Grant
    Filed: June 11, 1992
    Date of Patent: June 6, 1995
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Dennis L. Holtermann, Robert A. Innes, Theresa A. Pecoraro, Donald S. Santilli, James N. Ziemer
  • Hydrocarbon conversion process using zeolite SSZ-32 having constraint index of 13 or greater
    Patent number: 5397454
    Abstract: A crystalline zeolite SSZ-32 of novel composition is prepared using an N-lower alkyl-N'-isopropyl-imidazolium cation as a template. Also disclosed is a process for converting hydrocarbons with crystalline zeolite SSZ-32.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: March 14, 1995
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, James N. Ziemer, Donald S. Santilli, Robert A. Innes, Dennis L. Holtermann
  • Hydrocarbon conversion utilizing a low-aluminum boron beta zeolite
    Patent number: 5393407
    Abstract: A crystalline low-aluminum boron beta zeolite is prepared using a diquaternary ion as a template.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: February 28, 1995
    Assignee: Chevron Research Company
    Inventors: Stacey I. Zones, Dennis L. Holtermann, Lawrence W. Jossens, Donald S. Santilli, Andrew Rainis
  • Process for producing heavy lubricating oil having a low pour point
    Patent number: 5376260
    Abstract: Heavy waxy oil is dewaxed by a mild cracking and isomerization process using a catalyst comprising SSZ-32 and at least one Group VIII metal. The heavy oil contains naphthenic wax, which includes only a relatively small amount of normal alkanes. Naphthenic wax containing a minor amount of oil may also be dewaxed using the process.
    Type: Grant
    Filed: April 5, 1993
    Date of Patent: December 27, 1994
    Assignee: Chevron Research and Technology Company
    Inventors: Donald S. Santilli, Stacey I. Zones
  • Hydrocarbon conversion process using zeolite SSZ-32 as catalyst
    Patent number: 5300210
    Abstract: A crystalline zeolite SSZ-32 of novel composition is prepared using an N-lower alkyl-N'-isopropyl-imidazolium cation as a template. Also disclosed is a process for converting hydrocarbons with crystalline zeolite SSZ-32.
    Type: Grant
    Filed: June 7, 1993
    Date of Patent: April 5, 1994
    Assignee: Chevron Research and Technology Company
    Inventors: Stacey I. Zones, James N. Ziemer, Donald S. Santilli, Robert A. Innes, Dennis L. Holtermann
  • Use of modified 5-7 a pore molecular sieves for isomerization of hydrocarbons
    Patent number: 5282958
    Abstract: A process is disclosed for dewaxing a hydrocarbon feed to produce a dewaxed lube oil. The feed includes straight chain and slightly branched chain paraffins having 10 or more carbon atoms. In the process the feed is contacted under isomerization conditions with an intermediate pore size molecular sieve having a crystallite size of no more than about 0.5.mu. and pores with a minimum diameter of at least 4.8.ANG. and with a maximum diameter of 7.1.ANG. or less. The catalyst has sufficient acidity so that 0.5 g thereof when positioned in a tube reactor converts at least 50% of hexadecane at 370.degree. C., a pressure of 1200 psig, a hydrogen flow of 160 ml/min, and a feed rate of 1 ml/hr. It also exhibits 40 or greater isomerization selectivity when used under conditions leading to 96% conversion of hexadecane to other chemicals. The catalyst includes at least one Group VIII metal. The contacting is carried out at a pressure from about 15 psig to about 3000 psig.
    Type: Grant
    Filed: July 20, 1990
    Date of Patent: February 1, 1994
    Assignee: Chevron Research and Technology Company
    Inventors: Donald S. Santilli, Mohammad M. Habib, Thomas V. Harris, Stacey I. Zones
  • Hydrocarbon conversion processes using SSZ-31
    Patent number: 5215648
    Abstract: Hydrocarbon conversion processes using a crystalline zeolite SSZ-31.
    Type: Grant
    Filed: January 3, 1992
    Date of Patent: June 1, 1993
    Assignee: Chevron Research and Technology Company
    Inventors: Stacey I. Zones, Thomas V. Harris, Andrew Rainis, Donald S. Santilli
  • Zeolite SSZ-25
    Patent number: 5202014
    Abstract: A crystalline zeolite SSZ-25 is prepared using an adamantane quaternary ammonium ion as a template.
    Type: Grant
    Filed: November 6, 1991
    Date of Patent: April 13, 1993
    Assignee: Chevron Research and Technology Company
    Inventors: Stacey I. Zones, Dennis L. Holtermann, Robert A. Innes, Theresa A. Pecoraro, Donald S. Santilli, James N. Ziemer
  • Low-aluminum boron beta zeolite
    Patent number: 5166111
    Abstract: A crystalline low-aluminum boron beta zeolite is prepared using a diquaternary ion as a template.
    Type: Grant
    Filed: October 9, 1990
    Date of Patent: November 24, 1992
    Assignee: Chevron Research Company
    Inventors: Stacey I. Zones, Dennis L. Holtermann, Lawrence W. Jossens, Donald S. Santilli, Andrew Rainis
  • Use of zeolite SSZ-33 in hydrocarbon conversion processes
    Patent number: 5120425
    Abstract: A crystalline zeolite SSZ-33 is prepared using a quaternary ion as a template wherein said zeolite is used in hydrocarbon conversion processes.
    Type: Grant
    Filed: May 18, 1990
    Date of Patent: June 9, 1992
    Assignee: Chevron Research Company
    Inventors: Stacey I. Zones, Dennis L. Holtermann, Donald S. Santilli, Lawrence W. Jossens, James V. Kennedy, Andrew Rainis
  • Zeolite SSZ-31
    Patent number: 5106801
    Abstract: A crystalline zeolite SSZ-31 is prepared by various methods using quaternary ammonium ion templates.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: April 21, 1992
    Assignee: Chevron Research and Technology Company
    Inventors: Stacey I. Zones, Thomas V. Harris, Andrew Rainis, Donald S. Santilli