Patents by Inventor Ravindra R. Shah

Ravindra R. Shah 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).

  • Formulating a sealant fluid using gas to liquid base stocks
    Patent number: 8663454
    Abstract: It has been determined that sealant fluid formulations comprising a lubricant oil derived from Fischer-Tropsch waxes demonstrate performance comparable to sealant fluid comprising lubricants derived from polyalphaolefins (PAO's). The sealant fluids of the current invention can provide excellent performance properties similar to those provided by PAO based sealant fluids, but at lower cost.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: March 4, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventor: Ravindra R. Shah
  • FORMULATING A SEALANT FLUID USING GAS TO LIQUID BASE STOCKS
    Publication number: 20130125785
    Abstract: It has been determined that sealant fluid formulations comprising a lubricant oil derived from Fischer-Tropsch waxes demonstrate performance comparable to sealant fluid comprising lubricants derived from polyalphaolefins (PAO's). The sealant fluids of the current invention can provide excellent performance properties similar to those provided by PAO based sealant fluids, but at lower cost.
    Type: Application
    Filed: August 21, 2012
    Publication date: May 23, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventor: Ravindra R. Shah
  • FORMULATING A SEALANT FLUID USING GAS TO LIQUID BASE STOCKS
    Publication number: 20110094414
    Abstract: It has been determined that sealant fluid formulations comprising a lubricant oil derived from Fischer-Tropsch waxes demonstrate performance comparable to sealant fluid comprising lubricants derived from polyalphaolefins (PAO's). The sealant fluids of the current invention can provide excellent performance properties similar to those provided by PAO based sealant fluids, but at lower cost.
    Type: Application
    Filed: October 23, 2009
    Publication date: April 28, 2011
    Inventor: Ravindra R. Shah
  • GEAR OIL COMPOSITIONS, METHODS OF MAKING AND USING THEREOF
    Publication number: 20090298732
    Abstract: A gear oil composition is provided. The composition comprises a sufficient amount of an isomerized base oil in a base oil matrix comprising at least at least a polyalphaolefin for the gear oil composition to have for the gear oil composition to have an average volume change in a rubber seal between ?10 and +10, a change in shore A hardness between ?7 and +10 when tested with SRE NBR28 at 100° C., 168 hours per DIN53521 and DIN53505, a viscosity increase of less than 3% per US Steel S-200 oxidation stability test, a precipitation of less than 1% per US Steel S-200 oxidation stability test, and a Timken OK Load of greater than 60 lb. The isomerized base oil has consecutive numbers of carbon atoms and less than 10 wt % naphthenic carbon by n-d-M. In one embodiment, the sufficient amount of isomerized base oil ranges from 20 to 75 wt. % based on the total weight of the gear oil composition.
    Type: Application
    Filed: May 29, 2008
    Publication date: December 3, 2009
    Inventors: Katty S. Hoste, Yves A. Peremans, Ravindra R. Shah, Marissa B. Ferrer