Patents by Inventor John Aleksonis ZAKARIAN

John Aleksonis ZAKARIAN 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).

  • Driveline fluids comprising API group II base oil
    Patent number: 11407959
    Abstract: Described herein is a process, comprising: a) selecting an API Group II base stock with selected viscosity index and pour point; b) blending a base oil with the base stock, and c) adding to the base oil: i) a liquid ethylene propylene copolymer viscosity modifier that reduces a traction coefficient, and ii) an additive package, to make a driveline fluid that has a defined viscosity index and excellent shear stability. Also provided is a driveline fluid composition having the high viscosity index and excellent shear stability, comprising: a) a base oil comprising from 50 wt % to 100 wt % API Group II base stock; b) a liquid ethylene propylene copolymer viscosity modifier that reduces a traction coefficient; and c) an additive package. Further provided is a method for lubricating an axle or manual transmission by supplying the driveline fluid composition.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: August 9, 2022
    Assignees: The Lubrizol Corporation, Chevron U.S.A. Inc.
    Inventors: Hyun-Soo Hong, John Aleksonis Zakarian, Sona Sivakova, Tomoya Higuchi, Christopher Engel, Farrukh Qureshi
  • DRIVELINE FLUIDS COMPRISING API GROUP II BASE OIL
    Publication number: 20190177649
    Abstract: Described herein is a process, comprising: a) selecting an API Group II base stock with selected viscosity index and pour point; b) blending a base oil with the base stock, and c) adding to the base oil: i) a liquid ethylene propylene copolymer viscosity modifier that reduces a traction coefficient, and ii) an additive package, to make a driveline fluid that has a defined viscosity index and excellent shear stability. Also provided is a driveline fluid composition having the high viscosity index and excellent shear stability, comprising: a) a base oil comprising from 50 wt % to 100 wt % API Group II base stock; b) a liquid ethylene propylene copolymer viscosity modifier that reduces a traction coefficient; and c) an additive package. Further provided is a method for lubricating an axle or manual transmission by supplying the driveline fluid composition.
    Type: Application
    Filed: July 28, 2016
    Publication date: June 13, 2019
    Applicants: Chevron U.S.A. Inc., The Lubrizol Corporation
    Inventors: Hyun-Soo HONG, John Aleksonis ZAKARIAN, Sonia SIVAKOVA, Tomoya HIGUCHI, Christopher ENGEL, Farrukh QURESHI