Patents by Inventor Gefei Wu

Gefei Wu 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).

  • 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
  • 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
  • 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
  • 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
  • Patent number: 10774287
    Abstract: Traction fluid additive combination that is usable with any traction fluids base stock is provided. To optimize the traction, low temperature viscosity and shear stability performance, a combination of a polyisobutene and a polymethacrylate may be added to a base oil to obtain a traction fluid with good low temperature viscosity without degrading the shear strength properties of the fluid. To minimize foaming of the traction fluid, a combination of one, two, or more anti-foaming agents may be added to the fluid in addition to a standard additive package.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: September 15, 2020
    Assignee: VALVOLINE LICENSING AND INTELLECTUAL PROPERTY LLC
    Inventors: Gefei Wu, Ning Ren, Frances E. Lockwood
  • Publication number: 20190276765
    Abstract: raction fluid additive combination that is usable with any traction fluids base stock is provided. To optimize the traction, low temperature viscosity and shear stability performance, a combination of a polyisobutene and a polymethacrylate may be added to a base oil to obtain a traction fluid with good low temperature viscosity without degrading the shear strength properties of the fluid. To minimize foaming of the traction fluid, a combination of one, two, or more anti-foaming agents may be added to the fluid in addition to a standard additive package.
    Type: Application
    Filed: March 6, 2019
    Publication date: September 12, 2019
    Applicant: VALVOLINE LICENSING AND INTELLECTUAL PROPERTY LLC
    Inventors: Gefei Wu, Ning Ren, Frances E. Lockwood
  • Patent number: 10323207
    Abstract: A gear or engine oil or other type of lubricant, which effectively reduces churning losses in a dip lubrication system or any lubrication system where churning loss occur has a surface tension less than 28 mN/m and viscosity less than 400 mPa-sec at 25° C. (about 500 cSt at 25° C.). Formulations include Group I-IV base oil, in combination with an amount of silicone oil effective to decrease the surface tension of the oil, thereby reducing churning losses. When the base oil is prominently Group III, the coefficient of friction of the gear oil is also reduced.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: June 18, 2019
    Assignees: Imperial Innovations Limited, Valvoline Licensing and Intellectual Property LLC
    Inventors: Anant S. Kolekar, Andrew V. Olver, Adam E. Sworski, Frances E. Lockwood, Gefei Wu, Xiurong Cheng
  • Patent number: 9540558
    Abstract: The invention relates to an engine coolant composition, and a method of increasing the operational life of a coolant composition in an engine, wherein an isononanoic acid is incorporated into the generally glycol based coolant fluid in place of nitrous acid or its salt to reduce pitting corrosion on iron containing surfaces, and one or more hydroxybenzoic acids are incorporated.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: January 10, 2017
    Assignee: Ashland Licensing and Intellectual Property, LLC
    Inventors: David E. Turcotte, Ladislaus Meszaros, David F. Embaugh, Gefei Wu
  • Publication number: 20160257906
    Abstract: A silicone modified lubricant includes a Group I, II, III, IV or V base oil in combination with a minor amount of a silicone oil. Further, the lubricant includes a dispersant such as a dispersant olefin copolymer which maintains the silicone oil dispersed in the base oil. The silicone oil reduces the surface tension of the lubricant thereby reducing power loss. Preferably the lubricant formation has a surface tension less than 28 mN/m, making it particularly suitable for dip lubrication systems.
    Type: Application
    Filed: May 16, 2016
    Publication date: September 8, 2016
    Inventors: Anant S. Kolekar, Andrew V. Olver, Adam E. Sworski, Frances E. Lockwood, Gefei Wu, Xiurong Cheng
  • Patent number: 9328278
    Abstract: The invention relates to an engine coolant composition, and a method of increasing the operational life of a coolant composition in an engine, wherein an isononanoic acid is incorporated into the generally glycol based coolant fluid in place of nitrous acid or its salt to reduce pitting corrosion on iron containing surfaces.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: May 3, 2016
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: David E. Turcotte, Ladislaus Meszaros, David F. Embaugh, Gefei Wu
  • Publication number: 20160102234
    Abstract: The invention relates to an engine coolant composition, and a method of increasing the operational life of a coolant composition in an engine, wherein an isononanoic acid is incorporated into the generally glycol based coolant fluid in place of nitrous acid or its salt to reduce pitting corrosion on iron containing surfaces, and one or more hydroxybenzoic acids are incorporated.
    Type: Application
    Filed: December 17, 2015
    Publication date: April 14, 2016
    Inventors: David E. Turcotte, Ladislaus Meszaros, David F. Embaugh, Gefei Wu
  • Publication number: 20150148272
    Abstract: A gear or engine oil or other type of lubricant, which effectively reduces churning losses in a dip lubrication system or any lubrication system where churning loss occur has a surface tension less than 28 mN/m and viscosity less than 400 mPa-sec at 25° C. (about 500 cSt at 25° C.). Formulations include Group I-IV base oil, in combination with an amount of silicone oil effective to decrease the surface tension of the oil, thereby reducing churning losses. When the base oil is prominently Group III, the coefficient of friction of the gear oil is also reduced.
    Type: Application
    Filed: November 20, 2014
    Publication date: May 28, 2015
    Inventors: Anant S Kolekar, Andrew V. Olver, Adam E. Sworski, Frances E. Lockwood, Gefei Wu, Xiurong Cheng
  • Publication number: 20140366817
    Abstract: The invention relates to an engine coolant composition, and a method of increasing the operational life of a coolant composition in an engine, wherein an isononanoic acid is incorporated into the generally glycol based coolant fluid in place of nitrous acid or its salt to reduce pitting corrosion on iron containing surfaces.
    Type: Application
    Filed: June 12, 2013
    Publication date: December 18, 2014
    Inventors: David E. Turcotte, Ladislaus Meszaros, David F. Embaugh, Gefei Wu
  • Publication number: 20130042378
    Abstract: A protective garment for a human forearm. The protective garment includes a main body portion having opposing first and second longitudinal ends. There is an interior surface that faces the forearm and an exterior surface that faces away from the forearm. The main body portion includes an expandable wrist band coupled to the first longitudinal end of the main body portion. The exterior surface includes a second plurality of raised portions that is configured to dissipate heat transferred from a heated surface contacting the exterior surface.
    Type: Application
    Filed: August 18, 2011
    Publication date: February 21, 2013
    Applicant: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC
    Inventors: Gefei Wu, Douglas E. Taylor, Wen-Chen Su, Joanne M. Stokley, Todd S. Greene, Frances E. Lockwood
  • Patent number: 7976624
    Abstract: An aqueous gel wax formulation includes a cationic wax microemulsion and an anionically charged polishing agent having a particle size less than about 200 nanometers and optimally a quaternary ammonium substituted silicone and an amino functional silicone. The components combine to form a gel wax formulation which can be applied without buffing.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: July 12, 2011
    Inventors: Hida Hasinovic, Gefei Wu
  • Publication number: 20110132227
    Abstract: An aqueous gel wax formulation includes a cationic wax microemulsion and an anionically charged polishing agent having a particle size less than about 200 nanometers and optimally a quaternary ammonium substituted silicone and an amino functional silicone. The components combine to form a gel wax formulation which can be applied without buffing.
    Type: Application
    Filed: November 12, 2010
    Publication date: June 9, 2011
    Applicant: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC
    Inventors: Hida Hasinovic, Gefei Wu
  • Publication number: 20100022422
    Abstract: A process for producing a nanographite dispersion in a fluid wherein the thermal conductivity of the dispersion is enhanced from the base fluid by more than 10% for a 1% graphite dispersion. A high purity graphite with high crystallinity and reduced surface damage and oxidation is selected as the starting material. The starting material is subjected to a process of wet media milling in the presence of dispersant and solvent fluid. The mill temperature is controlled to control and reduce surface damage to yield a nanographite with flake shape and controlled aspect ratio until a particle size average of 300 nm diameter and 50 nm is obtained. The process recycles a portion of the milled material to increase the ratio of small particle distribution to large particles in an intermediate product with small and large particle bi-modal distribution. The large particle distribution is removed by a separation process such as centrifugation or filtration.
    Type: Application
    Filed: May 15, 2007
    Publication date: January 28, 2010
    Inventors: Gefei Wu, Zhiqiang Zhang, Frances E. Lockwood, Stephanie M. McCoy, Thomas R. Smith
  • Patent number: 7470650
    Abstract: The introduction of nanostructures in a liquid provides a means for changing the physical and/or chemical properties of the liquid. Improvements in heat transfer, electrical properties, viscosity, and lubricity can be realized upon dispersion of nanotubes in liquids. Stable dispersions of nanostructures are described and surfactants/dispersants are identified which can disperse nanostructures in petroleum liquid medium. The appropriate dispersant is chosen for the selected nanostructure material and the oil based medium and the dispersant is dissolved into the liquid medium to form a solution. The nanostructure is added to the dispersant containing the solution with agitation, ultrasonication, and/or combinations thereof. Nanostructures dispersed in a fluid form a nanofluid utilized as a shock absorber oil whereby the nanostructures serve to improve the viscosity index of the fluid or more particularly the shock absorber oil in the form of a lubricant additive.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: December 30, 2008
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: Zhiqiang Zhang, Gefei Wu, Frances E. Lockwood, Daniel J. Dotson
  • Publication number: 20080287326
    Abstract: A lubricant composition having an enhanced thermal conductivity, up to 80% greater than its conventional analogues, and methods of preparation for these fluids are identified. One preferred composition contains a base oil, nanomaterial, and a dispersing agent or surfactant for the purpose of stabilizing the nanomaterial. One preferred nanomaterial is a high thermal conductivity graphite, exceeding 80 W/m in thermal conductivity. The graphite is ground, milled, or naturally prepared to obtain a mean particle size less than 500 nm in diameter, and preferably less than 100 nm, and most preferably less than 50 nm. The graphite is dispersed in the fluid by one or more of various methods, including ultrasonication, milling, and chemical dispersion. Carbon nanostructures such as nanotubes, nanofibrils, and nanoparticles are another type of graphitic structure useful in the present invention. Other high thermal conductivity carbon materials are also acceptable.
    Type: Application
    Filed: October 31, 2007
    Publication date: November 20, 2008
    Inventors: Zhiqiang Zhang, Gefei Wu, Frances E. Lockwood
  • Patent number: 7449432
    Abstract: The present invention relates to a novel use of nanomaterials as a viscosity modifier and thermal conductivity improver for gear oil and other lubricating oil compositions. The gear oils of the instant invention have a higher viscosity index, higher shear stability, and improved thermal conductivity compared to currently available gear oils. The preferred nanoparticles also impart a reduction in the coefficient of friction, including reduced friction in the boundary lubrication regime. These properties are obtained by replacing part or all of the polymer thickener or viscosity index improver or some other part of the composition normally used in gear oils with nanomaterials of suitable shape, size, and composition.
    Type: Grant
    Filed: March 7, 2006
    Date of Patent: November 11, 2008
    Assignee: Ashland Licensing and Intellectual Property, LLC (ALIP)
    Inventors: Frances E. Lockwood, Zhiqiang Zhang, Gefei Wu, Thomas R. Smith