Patents by Inventor Rajkumar Rajule

Rajkumar Rajule 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).

  • Lubricant composition containing ashless TBN molecules
    Patent number: 11674104
    Abstract: New ashless TBN molecules are synthesized, and lubricant compositions containing them, boost the total base number. The lubricant compositions further tested for ASTM D6594 copper corrosion test meets ASTM limits.
    Type: Grant
    Filed: January 12, 2022
    Date of Patent: June 13, 2023
    Assignee: VGP IPCO LLC
    Inventors: Rajkumar Rajule, Jesse Dambacher
  • Lubricant composition containing Ashless TBN molecules
    Patent number: 11597891
    Abstract: New ashless TBN molecules are synthesized, and lubricant compositions containing them, boost the total base number. The lubricant compositions further tested for ASTM D6594 copper corrosion test meets ASTM limits.
    Type: Grant
    Filed: January 12, 2022
    Date of Patent: March 7, 2023
    Assignee: VALVOLINE LICENSING AND INTELLECTUAL PROPERTY LLC
    Inventors: Rajkumar Rajule, Jesse Dambacher
  • Lubricant composition containing ashless TBN molecules
    Patent number: 11345873
    Abstract: New ashless TBN molecules are synthesized, and lubricant compositions containing them, boost the total base number. The lubricant compositions further tested for ASTM D6594 copper corrosion test meets ASTM limits.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: May 31, 2022
    Assignee: Valvoline Licensing and Intellectual Property LLC
    Inventors: Rajkumar Rajule, Jesse Dambacher
  • LUBRICANT COMPOSITION CONTAINING ASHLESS TBN MOLECULES
    Publication number: 20220135896
    Abstract: New ashless TBN molecules are synthesized, and lubricant compositions containing them, boost the total base number. The lubricant compositions further tested for ASTM D6594 copper corrosion test meets ASTM limits.
    Type: Application
    Filed: January 12, 2022
    Publication date: May 5, 2022
    Inventors: Rajkumar Rajule, Jesse Dambacher
  • LUBRICANT COMPOSITION CONTAINING ASHLESS TBN MOLECULES
    Publication number: 20220135895
    Abstract: New ashless TBN molecules are synthesized, and lubricant compositions containing them, boost the total base number. The lubricant compositions further tested for ASTM D6594 copper corrosion test meets ASTM limits.
    Type: Application
    Filed: January 12, 2022
    Publication date: May 5, 2022
    Inventors: Rajkumar Rajule, Jesse Dambacher
  • Traction fluid with improved low temperature properties
    Patent number: 10927321
    Abstract: A traction fluid comprising a blend of 2,3-dicyclohexyl-2,3-dimethylbutane (HAD) and 2,3-dicyclohexyl-2,3-dimethylbutane (iso-HAD) is found to have a lower viscosity at low temperatures when compared to a traction fluid having only HAD or only iso-HAD as a base fluid with no compromise to traction coefficient. The traction fluid may comprise additives. The traction fluid usually comprises HAD:isoHAD between about 8:1 to about 1:3. Further, the HAD:iso-HAD traction fluid blend is produced by a method of simultaneous co-production of hydrogenated HAD and hydrogenated iso-HAD from an alpha styrene dimer and an iso-HAD precursor with a yield of about 90% in a method that does not require a purification step.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: February 23, 2021
    Assignee: VALVOLINE LICENSING AND INTELLECTUAL PROPERTY LLC
    Inventors: Gefei Wu, Rajkumar Rajule, Ning Ren, Jesse Dambacher, Frances Lockwood
  • LUBRICANT COMPOSITION CONTAINING ASHLESS TBN MOLECULES
    Publication number: 20210047579
    Abstract: New ashless TBN molecules are synthesized, and lubricant compositions containing them, boost the total base number. The lubricant compositions further tested for ASTM D6594 copper corrosion test meets ASTM limits.
    Type: Application
    Filed: August 13, 2020
    Publication date: February 18, 2021
    Inventors: Rajkumar Rajule, Jesse Dambacher
  • Traction fluid with improved low temperature properties
    Patent number: 10894930
    Abstract: A traction fluid comprising a blend of 2,3-dicyclohexyl-2,3-dimethylbutane (HAD) and 2,3-dicyclohexyl-2,3-dimethylbutane (iso-HAD) is found to have a lower viscosity at low temperatures when compared to a traction fluid having only HAD or only iso-HAD as a base fluid with no compromise to traction coefficient. The traction fluid may comprise additives. The traction fluid usually comprises HAD:isoHAD between about 8:1 to about 1:3. Further, the HAD:iso-HAD traction fluid blend is produced by a method of simultaneous co-production of hydrogenated HAD and hydrogenated iso-HAD from an alpha styrene dimer and an iso-HAD precursor with a yield of about 90% in a method that does not require a purification step.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: January 19, 2021
    Assignee: VALVOLINE LICENSING AND INTELLECTUAL PROPERTY LLC
    Inventors: Gefei Wu, Rajkumar Rajule, Ning Ren, Jesse Dambacher, Frances Lockwood
  • NOVEL TRACTION FLUID WITH IMPROVED LOW TEMPERATURE PROPERTIES
    Publication number: 20200347314
    Abstract: A traction fluid comprising a blend of 2,3-dicyclohexyl-2,3-dimethylbutane (HAD) and 2,3-dicyclohexyl-2,3-dimethylbutane (iso-HAD) is found to have a lower viscosity at low temperatures when compared to a traction fluid having only HAD or only iso-HAD as a base fluid with no compromise to traction coefficient. The traction fluid may comprise additives. The traction fluid usually comprises HAD:isoHAD between about 8:1 to about 1:3. Further, the HAD:iso-HAD traction fluid blend is produced by a method of simultaneous co-production of hydrogenated HAD and hydrogenated iso-HAD from an alpha styrene dimer and an iso-HAD precursor with a yield of about 90% in a method that does not require a purification step.
    Type: Application
    Filed: July 10, 2020
    Publication date: November 5, 2020
    Applicant: VALVOLINE LICENSING AND INTELLECTUAL PROPERTY LLC
    Inventors: Gefei Wu, Rajkumar Rajule, Ning Ren, Jesse Dambacher, Frances Lockwood
  • NOVEL TRACTION FLUID WITH IMPROVED LOW TEMPERATURE PROPERTIES
    Publication number: 20200291322
    Abstract: A traction fluid comprising a blend of 2,3-dicyclohexyl-2,3-dimethylbutane (HAD) and 2,3-dicyclohexyl-2,3-dimethylbutane (iso-HAD) is found to have a lower viscosity at low temperatures when compared to a traction fluid having only HAD or only iso-HAD as a base fluid with no compromise to traction coefficient. The traction fluid may comprise additives. The traction fluid usually comprises HAD:isoHAD between about 8:1 to about 1:3. Further, the HAD:iso-HAD traction fluid blend is produced by a method of simultaneous co-production of hydrogenated HAD and hydrogenated iso-HAD from an alpha styrene dimer and an iso-HAD precursor with a yield of about 90% in a method that does not require a purification step.
    Type: Application
    Filed: March 13, 2020
    Publication date: September 17, 2020
    Applicant: VALVOLINE LICENSING AND INTELLECTUAL PROPERTY LLC
    Inventors: Gefei Wu, Rajkumar Rajule, Ning Ren, Jesse Dambacher, Frances Lockwood
  • Scalable synthesis of hydrogenated alpha styrene dimer
    Patent number: 10696610
    Abstract: A procedure for hydrogenation of alpha dimethyl styrene dimer that is scalable, economical, and safe is provided. These processes routinely provide greater than a 98% yield and require no purification step. The methods of producing hydrogenated alpha dimethyl styrene dimer comprising adding to a reactor under nitrogen a catalyst comprising Ru/C or Rh/C and an alpha dimethyl styrene dimer to form a catalyst and alpha dimethyl styrene dimer reaction mixture. The reaction mixture is then heated under pressure until hydrogenation of the alpha dimethyl styrene dimer is complete. To recover the hydrogenated alpha dimethyl styrene dimer, the reaction mixture is filtered through a celite bed under nitrogen.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: June 30, 2020
    Assignee: VALVOLINE LICENSING AND INTELLECTUAL PROPERTY LLC
    Inventors: Rajkumar Rajule, Jesse Dambacher
  • SCALABLE SYNTHESIS OF HYDROGENATED ALPHA STYRENE DIMER
    Publication number: 20190177249
    Abstract: A procedure for hydrogenation of alpha dimethyl styrene dimer that is scalable, economical, and safe is provided. These processes routinely provide greater than a 98% yield and require no purification step. The methods of producing hydrogenated alpha dimethyl styrene dimer comprising adding to a reactor under nitrogen a catalyst comprising Ru/C or Rh/C and an alpha dimethyl styrene dimer to form a catalyst and alpha dimethyl styrene dimer reaction mixture. The reaction mixture is then heated under pressure until hydrogenation of the alpha dimethyl styrene dimer is complete. To recover the hydrogenated alpha dimethyl styrene dimer, the reaction mixture is filtered through a celite bed under nitrogen.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 13, 2019
    Applicant: VALVOLINE LICENSING AND INTELLECTUAL PROPERTY LLC
    Inventors: Rajkumar Rajule, Jesse Dambacher
  • Substituted quinoxalines as kinase inhibitors
    Patent number: 9353094
    Abstract: Disclosed herein are compounds of formula (I) and methods of inhibiting IKK? and the NF-?B signaling and mTOR pathways.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: May 31, 2016
    Assignees: BOARD OF REGENTS OF THE UNIVERSITY OF NEBRASKA, THE BOARD OF REGENTS, UNIVERSITY OF TEXAS SYSTEM
    Inventors: Amarnath Natarajan, Qianyi Chen, Vashti C. Bryant, Rajkumar Rajule
  • QUINOXALINE COMPOUNDS AND USES THEREOF
    Publication number: 20150274709
    Abstract: Disclosed herein are compounds of formula (I) and methods of inhibiting IKK? and the NF-?B signaling and mTOR pathways.
    Type: Application
    Filed: March 5, 2015
    Publication date: October 1, 2015
    Inventors: Amarnath Natarajan, Qianyi Chen, Vashti C. Bryant, Rajkumar Rajule
  • Substituted quinoxalines and uses thereof
    Patent number: 8993758
    Abstract: Disclosed herein are compounds of formula (I) and methods of inhibiting IKK? and the NF-?B signaling and mTOR pathways.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: March 31, 2015
    Assignees: Board of Regents of the University of Nebraska, The Board of Regents, University of Texas System
    Inventors: Amarnath Natarajan, Qianyi Chen, Vashti C. Bryant, Rajkumar Rajule
  • QUINOXALINE COMPOUNDS AND USES THEREOF
    Publication number: 20130289041
    Abstract: Disclosed herein are compounds of formula (I) and methods of inhibiting IKK? and the NF-?B signaling and mTOR pathways.
    Type: Application
    Filed: November 22, 2011
    Publication date: October 31, 2013
    Applicant: BOARD OF REGENTS OF THE UNIVERSITY OF NEBRASKA
    Inventors: Amarnath Natarajan, Qianyi Chen, Vashti C. Bryant, Rajkumar Rajule