Patents Examined by Vishal Vasisth
  • Patent number: 9695379
    Abstract: Provided is a lubricating oil composition for a shock absorber excellent in thermal stability and capable of reducing the friction factor for rubber. The lubricating oil composition for a shock absorber contains (A) a base oil composed of a mineral oil and/or a synthetic oil, (B) a zinc dithiophosphate represented by the following general formula (I), (C) a fatty acid amide and (D) a polyalcohol ester. In the formula, R1 to R4 each independently represent at least one selected from a linear, branched or cyclic alkyl group having from 6 to 20 carbon atoms and a linear, branched or cyclic alkenyl group having from 6 to 20 carbon atoms.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: July 4, 2017
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Shuichi Sakanoue, Aya Aoki
  • Patent number: 9688941
    Abstract: Provided is a lubricating oil composition for a shock absorber, which realizes excellent riding comfort in low-temperature and high-temperature environments and can suppress worsening of riding comfort with time, which is caused by evaporation and shearing of the lubricating oil. The lubricating oil composition for a shock absorber contains (A) a base oil having a pour point of lower than ?40° C. and a kinematic viscosity at 80° C. of from 2.0 to 2.7 mm2/s, (B-1) from 1 to 15% by mass of a polymethacrylate having a weight-average molecular weight of from 10,000 to less than 100,000, and (B-2) from 0.1 to 5% by mass of a polymethacrylate having a weight-average molecular weight of from 100,000 to 200,000.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: June 27, 2017
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Shuichi Sakanoue, Aya Aoki
  • Patent number: 9688939
    Abstract: Sulfurized calcium phenate detergents having a reduced unsulfurized alkyl-substituted phenol content are made by: (A) providing, made from an unsulfurized alkyl-substituted phenol, a sulfurized calcium phenate detergent that, optionally, may have been further reacted with carbon dioxide; (B) adding to the detergent from 1 to 100 mass %, based on the mass of the detergent, of an organic solvent that has a boiling point of above 100° C. and below the boiling point of the unsulfurized alkyl-substituted phenol; and (C) removing the organic solvent from the detergent thereby to reduce the unsulfurized alkyl-substituted phenol content.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: June 27, 2017
    Inventors: Dirk Schwaebisch, Jamie Musmacher, Alastair A. Cant
  • Patent number: 9688937
    Abstract: The invention relates to a method for producing a stable boron solution with lubricating characteristics which is intended to be used preferably as an addition in the form of a concentrate/additive to a liquid, e.g. to a liquid fuel or a lubricant. The invention is achieved by the method steps of using a boron substance of pharmaceutical quality (1, 11), using a liquid as solvent, applying a mixing ratio between the boron substance and the solvent (3, 13) of preferably 1 g of boron per 15-25 liters of liquid, agitating the mixture for an initial predetermined period of time (4, 14), adding further liquid to dilute the solution (6, 15), the quantity of liquid being chosen such that a final user mixture reaches a concentration of between 20 and 30 ppm of boron (8), and further agitating the mixture (7, 16) for a second predetermined period of time so that the boron substance is completely dissolved in the boron solution, resulting in a boron solution which is stable over time.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: June 27, 2017
    Assignee: Triboron International AB
    Inventors: Tommy Lindblom, Magnus Undén
  • Patent number: 9683196
    Abstract: This application relates to branched diester compositions that can be used as a base stock for lubricant applications, or as a base stock blend component for use in a finished lubricant or for particular applications, and methods for making the same.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: June 20, 2017
    Assignee: Elevance Renewable Sciences, Inc.
    Inventors: Jonathan Brekan, Jordan Quinn, Kyle Mandla, Ryan Littich
  • Patent number: 9683194
    Abstract: The invention relates to lubricating compositions, processes of making such lubricating compositions, and method of using such lubricating compositions. The lubricating compositions of the present invention include a dispersant comprising a quaternary ammonium salt, a phosphorus-containing compound, a metal dialkyldithiophosphate, a derivative of a hydroxyl carbonyl compound and an amine and/or an alcohol. These compositions provide balanced deposit control and wear performance without causing any seal compatibility issues.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: June 20, 2017
    Assignee: The Lubrizol Corporation
    Inventors: Mark C. Davies, Ewan E. Delbridge, Matthew D. Gieselman, Colin J. H. Morton
  • Patent number: 9683193
    Abstract: The present disclosure describes transmission fluid compositions, additive packages, and methods for lubricating a transmission, particularly transmission fluid compositions having color stability that are able to meet or exceed vehicle transmission fluid specifications for different makes of vehicles. The transmission fluid composition contains a base oil and an additive composition having at least one thiadiazole compound the selected from compounds of the Formulas (I)-(II): wherein n is 1-5; R1 is a substituted or unsubstituted hydrocarbyl group having 1-100 carbon atoms; and R2 is a hydrogen or is a substituted or unsubstituted hydrocarbyl group having 1-100 carbon atoms, wherein the transmission fluid composition is adapted for use in a transmission.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: June 20, 2017
    Assignee: Afton Chemical Corporation
    Inventor: Lisa K. Thalen
  • Patent number: 9683195
    Abstract: The present invention aims to provide a viscosity index improver excellent in shear stability and having a low HTHS viscosity and a high viscosity index. The viscosity index improver of the present invention contains a (co)polymer (A) containing a polyolefin-based monomer as an essential monomer unit, and a base oil, wherein the absolute value of difference in solubility parameter between the (co)polymer (A) and the base oil is 0.8 to 2.0 (cal/cm3)1/2.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: June 20, 2017
    Assignee: SANYO CHEMICAL INDUSTRIES, LTD.
    Inventors: Shigekuni Nakada, Ayumu Sakaguchi, Takenori Tatsumi, Hiroki Yamashita
  • Patent number: 9676884
    Abstract: Copolymers of alpha-olefins are generally disclosed, including methods of making such copolymers. In some embodiments, copolymers of alpha-olefins and certain unsaturated ester compounds are also disclosed, including methods of making such copolymers. Lubricant compositions including copolymers of alpha-olefins are also disclosed, as well as methods of using such compositions in certain lubricant applications.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: June 13, 2017
    Assignee: Elevance Renewable Sciences, Inc.
    Inventors: Syed Q. Rizvi, Debra Tindall, Georgeta Hategan, Kristine Counter
  • Patent number: 9677023
    Abstract: This disclosure is directed to an additive package for a lubricant composition that provides improved fluoropolymer compatibility. The additive package comprises an amine compound and a seal compatibility additive. The disclosure is also directed to a lubricant composition comprising a base oil, an amine compound, and a seal compatibility additive. The seal compatibility additive improves the fluoropolymer seal compatibility of the resultant lubricant composition.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: June 13, 2017
    Assignee: BASF SE
    Inventors: Kevin J. DeSantis, Roger L. Kuhlman
  • Patent number: 9677022
    Abstract: The present invention relates to a lubricant base stock, a lubricant composition, a method of lubricating an object and the use of a lubricant base stock. The lubricant base stock comprises a first ester which is the reaction product of: a first polyol comprising at least 3 hydroxyl groups; a first mono-carboxylic acid comprising from 4 to 18 carbon atoms; and a poly-carboxylic acid comprising at least 2 carboxyl groups and comprising from 20 to 60 carbon atoms. The lubricant base stock also comprises a second ester which is the reaction product of: a second polyol comprising at least 3 hydroxyl groups; and a second mono-carboxylic acid comprising from 4 to 18 carbon atoms.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: June 13, 2017
    Assignee: CRODA, INC.
    Inventors: Jillian Carli Beyer, Alexei Nikolaevich Kurchan
  • Patent number: 9663742
    Abstract: A production method for a complex polyester composition includes obtaining a complex polyester composition by condensing polyhydric alcohol having three or more hydroxyl groups, a polycarboxylic acid having at least two carboxyl groups and carbon atoms of greater than or equal to 5, and monohydric alcohol having at least one oxyalkylene group in the absence of a solvent, wherein a component having a weight average molecular weight of less than or equal to 2000 in a GPC chart of the complex polyester composition is less than or equal to 43 area %.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: May 30, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Toshiki Fujiwara, Yuji Terada
  • Patent number: 9650587
    Abstract: The present invention relates to functional fluid compositions containing antioxidants, and specifically stable compositions containing antioxidants with limited solubility in and/or limited compatibility with the functional fluids with which they are used. In particular the present invention deals with functional fluids used in internal combustion engines, such as engine oils, and antioxidants containing a phenolic or benzoic group, where the antioxidant is present in the functional fluid composition at levels that would otherwise cause the composition to be unstable and/or hazy.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: May 16, 2017
    Assignee: The Lubrizol Corporation
    Inventors: Danielle N. Ivancic, James D. Burrington, Ewan E. Delbridge
  • Patent number: 9650328
    Abstract: Provided herein are compounds of the formula: in which n is an integer equal to or greater than 1; R2 is selected from hydrogen and optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched; and R1, R3, and R4, independently for each occurrence, are selected from optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched, wherein compositions comprising the compounds are characterized by particular combinations of values for estolide number, kinematic viscosity, and pour point. Also provided are compositions containing the compounds and methods of making both the compounds and compositions thereof.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: May 16, 2017
    Assignee: Biosynthetic Technologies, LLC
    Inventor: Jakob Bredsguard
  • Patent number: 9650588
    Abstract: A lubricant composition comprising a Group I, II, III or IV hydrocarbon oil and a polyalkylene glycol, the polyalkylene glycol having been prepared by reacting a C8-C20 alcohol and a mixed butylene oxide/propylene oxide feed using a double metal cyanide catalyst catalyzed oxyalkylation process, and wherein the lubricant composition remains clear and shows no phase separation at temperatures equal to and greater than the pour point of the hydrocarbon oil is provided. A method for making a lubricant composition is also provided.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: May 16, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Martin R. Greaves, Ronald Van Voorst, Marinus Meertens
  • Patent number: 9637702
    Abstract: A lubricant composition for 4-stroke or 2-stroke marine engine includes at least one lubricant base oil for marine engine, at least one olefin copolymer, at least one hydrogenated styrene-isoprene copolymer, at least one glycerol ester and at least one detergent, whose use promotes fuel economy and has good properties regarding engine cleanliness, in particular crankcase cleanliness.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: May 2, 2017
    Assignee: Total Marketing Services
    Inventor: Denis Lancon
  • Patent number: 9631160
    Abstract: The present invention relates to functional fluid compositions containing friction modifiers, and specifically stable compositions containing friction modifiers with limited solubility in and/or limited compatibility with the functional fluids with which they are used. In particular the present invention deals with functional fluids used in internal combustion engines, such as engine oils, and friction modifiers that contain one or more amide functional groups, where the friction modifier is present in the functional fluid composition at levels that would otherwise cause the composition to be unstable and/or hazy.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: April 25, 2017
    Assignee: The Lubrizol Corporation
    Inventors: James D. Burrington, Patrick E. Mosier, David C. Arters, Stuart L. Bartley
  • Patent number: 9624451
    Abstract: The present invention provides a multiple function dispersant viscosity index improver, a method of making the multiple function dispersant viscosity index improver, and a lubricating oil comprising the multiple function dispersant viscosity index improver. The multiple function dispersant viscosity index improver comprises two different functional groups, each directly grafted to a polymer backbone having graftable sites. The first functional group comprises the reaction product of an acylating agent and a first amine, the first amine comprising an aromatic primary amine, and the second functional group comprises the reaction product of an acylating agent and a second amine, the second amine comprising an aliphatic primary amine. The first functional group provides the dispersant viscosity index improver with soot handling performance attributes and the second functional group provides the dispersant viscosity index improver with sludge and varnish control performance attributes.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: April 18, 2017
    Assignee: Castrol Limited
    Inventors: Richard P. Sauer, Nicholas W. Groeger
  • Patent number: 9617492
    Abstract: An object of the present invention is to provide a lubricant which has excellent lubrication performance and is able to exhibit excellent lubrication performance even when under extreme pressure conditions. The present invention relates to a complex polyester composition containing polyester obtained by condensing polyhydric alcohol having at least two hydroxyl groups, a dicarboxylic acid having 44 carbon atoms, and monohydric alcohol. Further, the present invention relates to a lubricant composition containing the complex polyester composition, and a lubricant and a production method for a complex polyester composition.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: April 11, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Hiroyuki Suzuki, Yuji Terada
  • Patent number: 9617493
    Abstract: The invention provides a composition containing an oil of lubricating viscosity and an N-substituted malimide. The invention further relates to the use of the lubricating composition in an internal combustion engine.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: April 11, 2017
    Assignee: The Lubrizol Corporation
    Inventors: Seth L. Crawley, Jody A. Kocsis, Suzanne M. Patterson