Patents by Inventor Mark L. Sztenderowicz

Mark L. Sztenderowicz 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).

  • Publication number: 20220213401
    Abstract: The present disclosure generally relates to a lubricating oil composition comprising: a major amount of an oil of lubricating viscosity, one or more detergents comprising at least one alkylhydroxybenzoate compound, and an ashless sulfur compound. Also provided is a method of lubricating an engine with said lubricating oil composition.
    Type: Application
    Filed: September 3, 2020
    Publication date: July 7, 2022
    Applicants: CHEVRON ORONITE COMPANY LLC, CHEVRON JAPAN LTD.
    Inventors: Claire CHOMMELOUX, John Robert MILLER, Shelby A. SKELTON, Mark L. SZTENDEROWICZ, Alexander BOFFA, Isao TANAKA
  • Patent number: 8058214
    Abstract: A process to make a shock absorber fluid having improved performance properties, the properties including an air release after 1 minute by DIN 51381 of less than 0.8 vol %, a kinematic viscosity at 100° C. less than 5 mm2/s and an aniline point greater than or equal to 95° C., or meeting the specifications for Kayaba 0304-050-0002 or VW TL 731 class A. The shock absorber fluid is made by blending a base oil having less than 10 wt % naphthenic carbon and a high viscosity index with low levels of (or no) viscosity index improver and pour point depressant.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: November 15, 2011
    Assignee: Chevron U.S.A. Inc.
    Inventors: Chantal R. Swartele, John M. Rosenbaum, Marc J. De Weerdt, Thomas Plaetinck, Stephen J. Miller, Mark L. Sztenderowicz
  • Patent number: 8022024
    Abstract: A functional fluid comprising a base oil with a high viscosity index, wherein the functional fluid has a kinematic viscosity at 100° C. between 2.5 and 5.0 mm2/s, a low Brookfield viscosity, a high aniline point, and excellent air release. Shock absorber fluids with improved performance, comprising a particular base oil, wherein the improved performance includes high viscosity index, low Brookfield viscosity, high aniline point, excellent air release and high flash point.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: September 20, 2011
    Assignee: Chevron U.S.A. Inc.
    Inventors: Chantal R. Swartele, John M. Rosenbaum, Marc J. De Weerdt, Thomas Plaetinck, Stephen J. Miller, Mark L. Sztenderowicz
  • Publication number: 20090005274
    Abstract: A process to make a shock absorber fluid having improved performance properties, the properties including an air release after 1 minute by DIN 51381 of less than 0.8 vol %, a kinematic viscosity at 100° C. less than 5 mm2/s and an aniline point greater than or equal to 95° C., or meeting the specifications for Kayaba 0304-050-0002 or VW TL 731 class A. The shock absorber fluid is made by blending a base oil having less than 10 wt % naphthenic carbon and a high viscosity index with low levels of (or no) viscosity index improver and pour point depressant.
    Type: Application
    Filed: June 28, 2007
    Publication date: January 1, 2009
    Inventors: Chantal R. Swartele, John M. Rosenbaum, Marc J. De Weerdt, Thomas Plaetinck, Stephen J. Miller, Mark L. Sztenderowicz
  • Publication number: 20090005273
    Abstract: A functional fluid comprising a base oil with a high viscosity index, wherein the functional fluid has a kinematic viscosity at 100° C. between 2.5 and 5.0 mm2/s, a low Brookfield viscosity, a high aniline point, and excellent air release. Shock absorber fluids with improved performance, comprising a particular base oil, wherein the improved performance includes high viscosity index, low Brookfield viscosity, high aniline point, excellent air release and high flash point.
    Type: Application
    Filed: June 28, 2007
    Publication date: January 1, 2009
    Inventors: Chantal R. Swartele, John M. Rosenbaum, Marc J. De Weerdt, Thomas Plaetinck, Stephen J. Miller, Mark L. Sztenderowicz
  • Patent number: 7195706
    Abstract: A process for manufacturing a finished lubricant by: a) performing Fischer-Tropsch synthesis on syngas to provide a product stream; b) isolating from said product stream a substantially paraffinic wax feed having less than about 30 ppm total nitrogen and sulfur, and less than about 1 wt % oxygen; c) dewaxing said feed by hydroisomerization dewaxing using a shape selective intermediate pore size molecular sieve comprising a noble metal hydrogenation component, wherein the hydroisomerization temperature is between about 600° F. (315° C.) and about 750° F. (399° C.), to produce an isomerized oil; and d) hydrofinishing said isomerized oil, whereby a lubricating base oil is produced having specific desired properties; and e) blending the lubricating base oil with at least one lubricant additive.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: March 27, 2007
    Assignee: Chevron U.S.A. Inc.
    Inventors: Susan M. Abernathy, David C. Kramer, John M. Rosenbaum, Stephen J. Miller, Russell R. Krug, James N. Ziemer, Robert J. Farina, Mark L. Sztenderowicz
  • Patent number: 6187725
    Abstract: The invention includes a process of making a lubricating composition including: contacting a heavy mineral oil feed in a hydrocracking zone with a hydrocracking catalyst at hydrocracking conditions, whereby at least a portion of the heavy mineral oil feed is cracked; recovering at least one gasoline-range fraction and one bottoms fraction from the hydrocracking zone; passing a first portion of the bottoms fraction including not more than about 67 wt. % of the bottoms fraction to a dewaxing zone; and passing a second portion of the bottoms fraction including at least about 33 wt. % of the bottoms fraction back to the fuels hydrocracker for additional processing; and where the bottoms fraction has a viscosity at 100° C. of less than about 4.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: February 13, 2001
    Assignee: Chevron U.S.A. Inc.
    Inventors: David C. Kramer, John A. Zakarian, Jay M. Peterson, Russell R. Krug, Jaime Lopez, Stephen K. Lee, Mark L. Sztenderowicz, Joseph M. Pudlak
  • Patent number: 6110879
    Abstract: The present invention provides for a lubricating composition including: a hydrocracker-derived, highly naphthenic, low viscosity index mineral oil; from about 2 wt. % to about 14 wt. % of at least one polymethacrylate polymer; and from about 2 wt. % to about 14 wt. % of a performance additive package. The hydrocracker-derived, highly naphthenic, low viscosity index mineral oil is prepared by: (1) passing a first bottoms portion including not more than about 67 wt. % of a fuels hydrocracker bottoms recycle stream to a dewaxing zone; and (2) passing a second bottoms portion including at least about 33 wt. % of the recycle stream back to the fuels hydrocracker for additional processing; and where the recycle stream has a viscosity at 100.degree. C. of less than about 4.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: August 29, 2000
    Assignee: Chevron U.S.A. Inc.
    Inventors: David C. Kramer, John A. Zakarian, Jay M. Peterson, Russell R. Krug, Jaime Lopez, Stephen K. Lee, Mark L. Sztenderowicz, Joseph M. Pudlak