Patents Examined by Taiwo Oladapo
  • Patent number: 11801489
    Abstract: A separation medium for removing small molecules from biomacromolecule in aqueous mixtures comprises gel filtration chromatography beads having a nominal protein fractional range of about 1000 Da to about 5000 Da and having an internal adsorbent matrix derived from a hydrophobicized scaffold. The gel filtration chromatography beads remove small molecules that are less than 1500 Da and have log Pow values greater than about ?0.5 from biomacromolecules in aqueous mixtures. Devices containing the separation medium are also provided.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: October 31, 2023
    Inventor: Joseph F. Krebs
  • Patent number: 11802255
    Abstract: Disclosed herein are improved lubricating compositions effective to prevent or reduce low speed pre-ignition in an engine, as well as to prevent or reduce corrosion of engine components. The lubricating compositions include a base oil combined with a calcium chelate complex, optionally in further combination with additional additives.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: October 31, 2023
    Inventors: Ian G. Elliott, Amir Gamal Maria, Richard Eugene Cherpeck, Theresa Liang Gunawan
  • Patent number: 11787757
    Abstract: A phenol derivative of the present invention has a structure as represented by the formula (I): The functional groups are defined in the description. The phenol derivative can be used as the antioxidant in lubricating oil, lubricating grease, plastic, rubber, or can be used as the base oil of the lubricating oil and the lubricating grease and the antiwear additive of the lubricating oil and the lubricating grease.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: October 17, 2023
    Inventors: Xiaowei Chen, Kecheng Wei, Yuxiang Liang
  • Patent number: 11783963
    Abstract: A composition and method for reducing the coefficient of friction and required pulling force of a wire or cable are provided. A composition of aqueous emulsion is provided that is environmentally friendly, halogen free and solvent free. The composition is compatible with various types of insulating materials and may be applied after the wire or cable is cooled and also by spraying or submerging the wire or cable in a bath. The composition contains lubricating agents that provide lower coefficient of friction for wire or cable installation and continuous wire or cable surface lubrication thereafter.
    Type: Grant
    Filed: November 11, 2022
    Date of Patent: October 10, 2023
    Assignee: Encore Wire Corporation
    Inventors: William T. Bigbee, Jr., Sheri H. Dahlke, Ronald A. Raedeke, Jason Drew Gillen, Melvin Glenn Debord
  • Patent number: 11760954
    Abstract: A lubricant composition containing a base oil and organic fine particles substantially consisting of the three elements of carbon, hydrogen and oxygen and having a proportion of particles having a particle diameter of 10 nm to 10 ?m of 90% or greater, wherein the content of the organic fine particles is 0.01 to 50 parts by mass relative to 100 parts by mass of the base oil.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: September 19, 2023
    Inventors: Kenji Yamamoto, Shuhei Igarashi, Ryou Hanamura
  • Patent number: 11739278
    Abstract: A bearing material may include a polyamide-imide polymer material and a difunctional crosslinking agent comprising a hydrocarbon chain and two functional groups. The functional groups may be selected from the list: amino, acid, epoxide, thiol, isocyanate.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: August 29, 2023
    Inventor: Jennifer Harvey
  • Patent number: 11739285
    Abstract: The present invention provides an application of nano copper in a cutting fluid. The nano copper is self-dispersible nano copper with an organic long-carbon chain, wherein the surface of copper metal is coated with a long carbon chain organic matter, and the long chain organic matter is dialkyl dithiophosphoric acid (HDDP) and a derivative thereof. In the present invention, the nano copper substitutes functional additives which comprises one or more of a preservative, an anti-rust agent, a sterilizing agent, a compression-resisting agent and a lubricant to solve the technical problems of the existing fluid in the prior art being unable to simultaneously have efficient anti-corrosion, anti-rust, compression-resistant, lubricating and sterilizing properties as well as the variety, the relatively high amount, the high cost and the limited selection of added additives.
    Type: Grant
    Filed: January 23, 2022
    Date of Patent: August 29, 2023
    Inventors: Yang Zhao, Jun Zhang, Dexiu Liu, Langgui Fan
  • Patent number: 11718808
    Abstract: A lubricant composition for a resin-resin sliding portion or a resin-metal sliding portion that contains a base oil containing a perfluoropolyether oil including a side chain, and a polytetrafluoroethylene having a primary particle diameter of 1 ?m or larger and a melamine cyanurate as thickeners.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: August 8, 2023
    Assignee: NOK KLUEBER CO., LTD.
    Inventor: Ayumi Sakai
  • Patent number: 11713433
    Abstract: A solid lubricant bar comprising hydrogenated castor oil or wax, expandable flake graphite, and copper. ATH, MDH, and zinc borate can also be added to the formulation to enhance fire retardancy and suppression.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: August 1, 2023
    Inventor: John Chester Kubiak
  • Patent number: 11708470
    Abstract: Disclosed is a resinous adhesion promoter comprising (a) a random copolymer having first and second constitutional monomeric units, the first units comprising halogen and/or a pendant organic group having six or more carbon atoms and the second monomeric units comprising an active hydrogen-containing functional group; and (b) one of either (i) a non-reactive adhesion promoter or (ii) a reaction mixture comprising a first component and a second component, at least one of the first and second components having functional groups being reactive with the active hydrogen-containing functional groups of the random copolymer.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: July 25, 2023
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Wei Wang, Chinming Hui, Lan Deng, Stephen John Thomas, Terri Lynn Ziegler, Richard Alan Janoski, Sr.
  • Patent number: 11702613
    Abstract: Provided is a grease composition for a ball joint that can reduce the wear of a ball seat at a slide region and also has excellent compatibility with a dust cover. The grease composition for a ball joint comprises a base oil, a thickener, and an additive. The base oil contains an ethylene-?-olefin copolymer and the kinetic viscosity of the base oil at 40° C. is 2,000 to 6,000 mm2/s. The additive contains a polar wax (e.g., monoamide wax or ester wax).
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: July 18, 2023
    Assignee: KYODO YUSHI CO., LTD.
    Inventors: Tsuyoshi Kochi, Mitsuhiro Kakizaki, Yosuke Fujiwara, Tomohiro Monna
  • Patent number: 11702611
    Abstract: A composition is obtained by mixing at least one oligomer A1, which is obtained by copolymerizing at least two monomers functionalized by diol functions with at least one second monomer, with at least one compound A2 having at least two boron ester functions. The compositions exhibit very varied rheological properties depending on the proportion of the compounds A1 and A2 used. A composition is also obtained by mixing at least one lubricating oil with such a composition of associative and exchangeable polymers, and the use of this composition to lubricate a mechanical part.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: July 18, 2023
    Inventors: Gregory Descroix, Fanny Briand
  • Patent number: 11697783
    Abstract: The present invention provides a non-aqueous lubricant composition comprising a base stock and 5 at least 0.02 wt % of a friction reducing additive which comprises a block co-polymer of at least one block A which is an oligo- or polyester residue of a hydroxycarboxylic acid and at least one block B which is a residue of a polyalkylene glycol. The invention also provides the use of a block co-polymer of at least one block A which is an oligo- or polyester residue of a hydroxycarboxylic acid and at least one block B which is a residue of a polyalkylene glycol to reduce the kinetic co-efficient 10 of friction in a non-aqueous lubricant composition when compared to an equivalent lubricant composition comprising no block co-polymer.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: July 11, 2023
    Assignee: EQUUS UK TOPCO LTD
    Inventors: Ian Stuart Hobday, Aitziber Viadas Cienfuegos, John Eastwood
  • Patent number: 11674105
    Abstract: Lubricating compositions comprising an azole-acrylic adduct formed by contacting an azole compound with an acrylic. The adduct formed has at least one N-alkyl group comprising at least one acyl. The lubricating composition also comprises a thiadiazole. Methods of lubricating a component of a farm tractor, off-highway vehicle or drivetrain comprising contacting the component with the lubricating composition comprising an azole-acrylic adduct formed by mixing an azole compound with an acrylic. Methods of reducing corrosion in a component. The use of an azole-acrylic adduct in a lubricating composition to reduce corrosion in a component.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: June 13, 2023
    Assignee: The Lubrizol Corporation
    Inventors: Nga H. Nguyen, Peter Miatt
  • Patent number: 11667860
    Abstract: A stabilized paraffin inhibitor/pour point depressant (PI/PPD) product formulation is described which includes a copolymer having a monomer selected from the group consisting of alkyl acrylate polymers, alkyl methacrylate polymers, and combinations thereof, where the copolymer comprises vinyl acetate and the product includes an ethylene-based copolymer. The presence of the vinyl acetate stabilizes the product to prevent or inhibit the ethylene-based copolymer from separating out of the product. The product is useful to reduce paraffin deposition and/or improve flow characteristics of petroleum fluids, such as crude oil.
    Type: Grant
    Filed: June 20, 2021
    Date of Patent: June 6, 2023
    Assignee: Baker Hughes Oilfield Operations LLC
    Inventors: Kui Xu, Wojciech Jakubowski, David W. Jennings, Rebecca Vilain
  • Patent number: 11661563
    Abstract: An extremely rheopectic sulfonate-based grease composition and method comprising adding overbased calcium sulfonate, overbased magnesium sulfonate, and a facilitating acid, using a particular type of overbased calcium sulfonate and/or methods for adding overbased calcium sulfonate relative to the magnesium sulfonate and facilitating acid to favor the reaction between the magnesium sulfonate and facilitating acid. A preferred overbased calcium sulfonate comprises benzene rings having multiple alkyl groups. Preferred methods comprise (1) adding all calcium sulfonate after adding the magnesium sulfonate and facilitating acid, (2) adding a first portion of calcium sulfonate with the magnesium sulfonate before adding the facilitating acid and a second portion of calcium sulfonate after the facilitating acid, and/or (3) one or more calcium sulfonate delay periods relative to adding the facilitating acid.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: May 30, 2023
    Assignee: NCH Corporation
    Inventors: J. Andrew Waynick, Alisha Farrington, Deon Copeland
  • Patent number: 11654443
    Abstract: According to the invention there is provided a method of processing a mixture of minerals including the steps of: (a) providing a mixture of minerals which includes a metal containing mineral and one or more unwanted gangue minerals; (b) achieving a contact between the mixture of minerals and polymeric material that includes a mineral binding moiety which selectively binds to the metal containing mineral; and (c) separating the gangue minerals and the polymeric material which has the metal containing mineral bound thereto.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: May 23, 2023
    Inventors: Warrick James David Allen, Simon David Childs, Andrea Duffy, Nicholas Horrocks, Elizabeth Lakin, Paul Edward Young Milne, James Leonard Rolfe
  • Patent number: 11639479
    Abstract: There is disclosed an antifoam component which includes at least one acrylamide polymer for use in a diesel fuel. Acrylamide polymers prepared by polymerizing a (meth)acrylamide monomer to yield a homopolymer or, alternatively, the acrylamide polymer may be prepared by polymerizing a (meth)acrylamide monomer and a (meth)acrylate monomer to yield a heteropolymer.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: May 2, 2023
    Assignee: The Lubrizol Corporation
    Inventors: James H. Bush, David M. Nickerson, Rochelle L. Kovach, Jayasooriya Sujith Perera, Elizabeth A. Schiferl, Kamalakumari K. Salem
  • Patent number: 11572527
    Abstract: Provided is a grease composition which contains (A) a mixed base oil containing (A1) a low-viscosity base oil having a kinematic viscosity at 40° C. of 10 to 50 mm2/s and (A2) a high-viscosity base oil having a kinematic viscosity at 40° C. of 200 to 700 mm2/s, (B) a lithium-based thickener and (C) a polymer having a kinematic viscosity at 100° C. of 1,000 to 100,000 mm2/s, and has an apparent viscosity at ?10° C., as measured according to JIS K2220:2013 and at a shear rate of 10 s?1, of 50 to 250 mPa·s. The grease composition is excellent in pumpability and is also excellent in wear resistance under poor lubrication conditions.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: February 7, 2023
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventor: Go Watanabe
  • Patent number: 11571737
    Abstract: According to an aspect of the present invention, an aqueous composition contains at least one selected from a group consisting of a carboxylic acid compound represented by the following formula (1), a carboxylic anhydride represented by the following formula (2), and a trimellitic anhydride; a basic compound; and water. In the formula (1), “R” represents an alkanediyl group having 2 to 4 carbons, a vinylene group, or a benzene ring, and “a” represents 2 or 3. In the formula (2), “R” represents an alkanediyl group having 2 to 4 carbons, a vinylene group, or a benzene ring.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: February 7, 2023
    Inventors: Takahito Tsujimoto, Hiroaki Tomimatsu, Teruaki Yokoo