Patents by Inventor George Psillas

George Psillas 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).

  • High viscosity synthetic ester lubricant base stock blends
    Patent number: 9481852
    Abstract: Cross blends of synthetic ester base stocks are produced from high viscosity synthetic ester base stocks having a viscosity from about iso 120 to 140 and conventional synthetic ester base stocks of varying viscosities to form base stocks having viscosities from about iso 68 to iso 220. Lubricants formed from the cross blends have sufficient miscibility with HFC refrigeration fluids with minimal use of i-C9 carboxylic acids to form the ester.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: November 1, 2016
    Assignee: The Lubrizol Corporation
    Inventor: George Psillas
  • High Viscosity Synthetic Ester Lubricant Base Stock Blends
    Publication number: 20110071063
    Abstract: Cross blends of synthetic ester base stocks are produced from high viscosity synthetic ester base stocks having a viscosity from about iso 120 to 140 and conventional synthetic ester base stocks of varying viscosities to form base stocks having viscosities from about iso 68 to iso 220. Lubricants formed from the cross blends have sufficient miscibility with HFC refrigeration fluids with minimal use of i-C9 carboxylic acids to form the ester.
    Type: Application
    Filed: November 24, 2010
    Publication date: March 24, 2011
    Applicant: THE LUBRIZOL CORPORATION
    Inventor: George Psillas
  • High Viscosity Synthetic Ester Lubricant Base Stock Blends
    Publication number: 20080214418
    Abstract: Cross blends of synthetic ester base stocks are produced from high viscosity synthetic ester base stocks having a viscosity from about iso 120 to 140 and conventional synthetic ester base stocks of varying viscosities to form base stocks having viscosities from about iso 68 to iso 220. Lubricants formed from the cross blends have sufficient miscibility with HFC refrigeration fluids with minimal use of i-C9 carboxylic acids to form the ester.
    Type: Application
    Filed: July 27, 2006
    Publication date: September 4, 2008
    Applicant: The Lubrizol Corporation
    Inventor: George Psillas
  • Alkylbenzene/polyol ester blends for use in air conditioning systems
    Publication number: 20040209789
    Abstract: Alkylbenzene/polyol ester blends and alkylbenzene/polyalkylene glycol blends with a high proportion of alkylbenzene that offer a reduced cost alternative to polyol esters and polyalkylene glycol are disclosed. The alkylbenzene/polyol ester blends and alkylbenzene/polyalkylene glycol blends have sufficient HFC refrigerant solvency to operate satisfactorily. By mixing 60-80 wt % alkylbenzene with 20-40 wt % polyol ester or 20-40 wt % polyalkylene glycol, a product with beneficial properties from each component at a reduced cost is achieved.
    Type: Application
    Filed: December 8, 2003
    Publication date: October 21, 2004
    Inventors: Andrew Swallow, George Psillas, Richard Rowntree