Patents Examined by Jacqueline V. Howard
  • Patent number: 6573226
    Abstract: The invention relates to a variety of uses for novel carbon monoxide containing polymers. More specifically, the invention employs the use of low molecular weight polymers containing carbon monoxide for use as adhesive additives and as fluids (e.g., solvents and synthetic base stocks).
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: June 3, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Abhimanyu Onkar Patil, Donald Norman Schulz, Michael Gerard Matturro, Richard Henry Schlosberg
  • Patent number: 6573223
    Abstract: The invention relates to a lubricating composition comprising: (a) at least one sulfur-free hydrocarbyl phosphoric acid ester or salt, (b) at least one sulfur-containing hydrocarbyl phosphoric acid or salt, (c) an organic polysulfide, (d) at least one dispersant, and (e) at least one triazole metal deactivator. The composition may also include a thiadiazole derivative. This additive combination provides good antiwear and thermal stability properties, even under severe thermal conditions. These compositions also have good demulsibility properties. The above combination of additives provides the antiwear and extreme-pressure protection necessary for automotive and industrial gear applications. These additives additionally provide this protection without adversely effecting demulsibility properties of the lubricant.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: June 3, 2003
    Assignee: The Lubrizol Corporation
    Inventor: James N. Vinci
  • Patent number: 6573225
    Abstract: The invention concerns a metal powder composition for warm compaction comprising an iron-based powder and lubricant powder consisting of a polycarboxylic acid amide wax having a melting point peak in the range of 180° to 210° C.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: June 3, 2003
    Assignee: Höganäs AB
    Inventors: Hilmar Vidarsson, Sigurd Berg
  • Patent number: 6569818
    Abstract: A lubricating oil composition having a low P content of 0.01 to 0.1 wt. %, and a sulfated ash of 0.1 to 1 wt. %, which is composed of a) a major amount of mineral base oil having a low S content of at most 0.1 wt. %; b) an ashless alkenyl or alkyl-succinimide dispersant; c) a metal-containing detergent (non-sulfurized alkali metal or alkaline earth metal salt of an alkylsalicylic acid and/or non-sulfurized alkali metal or alkaline earth metal salt of an alkylphenol derivative having a Mannich base structure); d) Zn-DTP; e) an oxidation inhibitor (phenol compound and/or amine compound) and wherein the sulfur content is 0.01 to 0.3 wt %. The lubricating oil composition shows good high temperature detergency notwithstanding its low S, P, and sulfated ash content, and is favorably employable in diesel engines using fuel of an extremely low sulfur content.
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: May 27, 2003
    Assignee: Chevron Oronite Company, LLC
    Inventors: Morikuni Nakazato, Shigeru Iwamoto, Satoshi Hirano
  • Patent number: 6569816
    Abstract: A composition having lubricity such as a low degree of friction and wear and capable of supplying a lubricant continuously to a surface of a slide surface is disclosed. Also, a slide bearing, a retainer for a rolling bearing, and a seismically isolated apparatus formed by molding the composition are disclosed. The composition is composed by adding a porous silica and a lubricant to a base material; adding the lubricant-impregnated porous silica to the base material; or adding the lubricant-impregnated porous silica and the lubricant to the base material.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: May 27, 2003
    Assignee: NTN Corporation
    Inventors: Kouya Oohira, Masaki Egami, Eiichirou Shimazu, Hideyuki Tsutsui
  • Patent number: 6562768
    Abstract: This invention provides a tapping composition, a method of making the tapping composition and a method of using the tapping composition to cut internal threads on the surface of a hole drilled in metal. The tapping composition of this invention is comprised of a uniform blend of a glyceride, a liquid hydrocarbon oil and a polyvinyl chloride resin.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: May 13, 2003
    Inventor: Ronnie L. Gregston
  • Patent number: 6562765
    Abstract: An engine oil having a base oil and a friction reducing amount of an oil soluble sulfurized or unsulfurized oxymolybdenum complex prepared from reacting, in the presence of a polar promoter, an acidic molybdenum compound and a basic nitrogen compound and a low concentration of a sulfurized oxymolybdenum dialkyldithiocarbamate; employed together to provide at least 450 parts per million of molybdenum and less than 175 parts per million of molybdenum from the dialkyldithiocarbamate, both on the basis of the engine oil.
    Type: Grant
    Filed: July 11, 2002
    Date of Patent: May 13, 2003
    Assignee: Chevron Oronite Company LLC
    Inventor: Alexander B. Boffa
  • Patent number: 6559105
    Abstract: A composition of an antioxidant of the formula where R3 is an alkyl group of 2 to 6 carbon atoms, and a dispersant or a detergent, is a useful additive package for lubricant compositions.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: May 6, 2003
    Assignee: The Lubrizol Corporation
    Inventors: William D. Abraham, Paul E. Adams, Gordon D. Lamb, Thomas J. Wolak, Richard A. Denis, Jody A. Kocsis, James P. Roski, Virginia A. Carrick, Susan V. Cowling
  • Patent number: 6551965
    Abstract: A lubricating oil composition containing a base oil of lubricating viscosity, overbased sulfurized alkylphenate detergent or its calcium salt, an overbased alkylsulfonate detergent or its calcium salt, an ashless dispersant, and a zinc dialkyldithiophosphate and/or zinc diaryidithiophosphate is described. The lubricating oil composition provides improved heat stability and anti-wear performance in marine diesel engines operated under severe conditions where the cylinder liner temperature may reach 200 to 260° C.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: April 22, 2003
    Assignee: Chevron Oronite Company LLC
    Inventors: Hiroyuki Nagamatsu, Shigeru Iwamoto, Hirokazu Fujita
  • Patent number: 6548460
    Abstract: The coating composition includes a methacrylic resin prepared by copolymerization of styrene or a substituted styrene (A), a methacrylic ester obtained from an alcohol having at least two carbon atoms and methacrylic acid (B), and an olefinic compound having at least one carboxylic group (C), in which the molar ratio thereof is 1:(0.05 to 44.5):(0.12 to 13). A metal sheet lubricated with the coating composition has superior characteristics of dissolution of the film in an alkaline solution, chemical processing, paint dryness, blocking resistance, corrosion resistance, stability of coating composition, and press formability (powdering resistance and galling resistance).
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: April 15, 2003
    Assignee: Kawasaki Steel Corporation
    Inventors: Kazuhiko Higai, Sachiko Suzuki, Hiroyuki Ogata, Shigeru Umino, Kazuo Mochizuki, Fuminori Mukaihara, Hideo Sasaoka, Yoshinori Gotou, Kazuo Wakasa
  • Patent number: 6548459
    Abstract: A process for the preparation of CNSL phenoxy carboxylic acid derivatives for use as an additive in a lubricant composition so as to impart improved rust inhibiting properties, including the steps of (a) partially hydrogenating distilled technical cashew nut shell liquid with palladium or nickel or platinum catalyst; to hydrogenate the olefinic chain; (b) reacting cashew nut shell liquid or partially hydrogenated technical cashew nut shell liquid with halogeno carboxylic acid derivatives to obtain unpolymerized cashew nut shell liquid phenoxy carboxylic acid derivatives, the reaction being carried out at a temperature ranging from 20 to 140° C. A lubricant containing a major proportion of a material selected from the group consisting of an oil of lubricating viscosity and a grease; and remainder an additive including CNSL phenoxy carboxylic acid derivative prepared by the foregoing process.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: April 15, 2003
    Assignee: Indian Oil Corporation Limited
    Inventors: Pankaj Kumar Mondal, Khem Chand Dohhen, Rakesh Sarin, Deepak Kumar Tuli, Niranjan Raghunath Raje, Akhilesh Kumar Bhatnagar
  • Patent number: 6548461
    Abstract: The invention relates to polyalkene alcohol polyetheramines of formula R1—(CH2)n—O—A)m—NR2R3, wherein R1 represents a polyalkene radical derived from C2- to C30-alkenes with a number average molecular weight of 300 to 5000, R2 and R3 each mean, independently of each other, hydrogen or organic radicals with a total of 400 carbon atoms. A denotes alkylene groups with 2 to 8 C atoms, m is a number from 1 to 200 and n denotes the number 0 or 1. The inventive polyalkene alcohol polyetheramines are suitable for use as carrier oils, detergents and dispersing agents in fuel and lubricant compositions.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: April 15, 2003
    Assignee: Basf Aktiengesellschaft
    Inventors: Knut Oppenländer, Wolfgang Günther, Dietmar Posselt, Klemens Massonne, Hans Peter Rath
  • Patent number: 6548456
    Abstract: Metal working fluids being oil-in-water emulsions comprising alkylated polyvinylpyrrolidones as surfactants for emulsifying the oil in water. The alkylated polyvinyl-pyrrolidones having a molecular weight of about 1,000 up to 50,000 provide emulsions showing a high emulsion stability under varying and severe processing conditions of metal working fluids. Further, advantages of the metal working fluids are the narrow distribution of the droplet size, the high stability against varying temperature, the high stability against varying quality/composition of the make-up water, a high capacity of dispersing metal fines in the metal working fluid as well as excellent film forming characteristics.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: April 15, 2003
    Assignee: Quaker Chemical Corporation
    Inventors: Hendrik Laurens Mulder, Robertus Petrus Jozef Maria Smits, Nicolaas Leonardus Johanna Maria Broekhof
  • Patent number: 6544937
    Abstract: A lubricating composition containing naphthenic basestocks has demulsification properties improved by the addition of a demulsification additive selected from oxyalkylated glycols, esters of oxyalkylated glycols and mixtures thereof.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: April 8, 2003
    Assignee: ExxonMobile Research and Engineering Company
    Inventors: William Donald Hewson, Terrence Edward Addley
  • Patent number: 6540797
    Abstract: Provided is a method for blending an unleaded summer gasoline containing ethanol. The method comprises providing a substantially oxygenate free unleaded gasoline blend stock having an RVP of no greater than 7.0, and preferably no greater than 6.0, and then adding sufficient ethanol to the gasoline blend stock such that the ethanol addition does not cause the T50 value to drop below the ASTM D 4814 minimum requirements of 170° F.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: April 1, 2003
    Assignee: Chevron U.S.A. Inc.
    Inventors: William R. Scott, Lewis M. Gibbs
  • Patent number: 6541430
    Abstract: Fluorinated dialkyl dithiophosphoric acids according to formula (I) and metallic salts thereof: the compounds are useful, for example, as additives for lubricant compositions.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: April 1, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Richard P. Beatty
  • Patent number: 6541428
    Abstract: The invention concerns alkoxylated sulfur alcohol orthophosphate compositions. It also concerns a method for preparing said compositions by sulphurizing alcohol orthophosphate composition. It further concerns the use of said alkoxylated sulphur alcohol orthophosphate compositions as multifunctional additives in lubricating or detergent aqueous formulations.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: April 1, 2003
    Assignee: Rhodia Chimie
    Inventor: Jean-Luc Joye
  • Patent number: 6534452
    Abstract: An industrial lubricant having wear prevention properties without sacrificing oxidation resistance comprises a major portion of a base oil; an effective amount of a sulfur and phosphorus antiwear compound and an effective amount of an anti-oxidant or mixture of antioxidants.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: March 18, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventor: Kevin David Butler
  • Patent number: 6534454
    Abstract: A composition, comprising; (A) at least one triglyceride oil of the formula  wherein R1, R2 and R3 are aliphatic hydrocarbyl groups containing from about 7 to about 23 carbon atoms and (B) an antioxidant comprising an amine of the formula  and R5 is hydrogen, an alkaryl group or an aralkyl group, R6 is an aryl group, an alkaryl group or an aralkyl group, with the proviso that when R5 is hydrogen, then R4 is an aryl group and (2) a phenol of the formula  wherein R13 is an alkyl group containing from 1 up to about 24 carbon atoms and a is an integer of from 1 up to 5. Optionally, the (A) and (B) composition may further comprise (C) other oils.
    Type: Grant
    Filed: May 4, 2002
    Date of Patent: March 18, 2003
    Assignee: Renewable Lubricants, Inc.
    Inventors: William W. Garmier, Adam W. Rotondo
  • Patent number: 6534451
    Abstract: Power transmission fluids exhibiting improved antiwear properties containing a novel antiwear additive formed by reacting elemental sulfur and a dialkyl phosphite in the presence of an acylated amine compound. Also present in the fluid are dispersant, friction modifier, antioxidant and viscosity modifier.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: March 18, 2003
    Assignee: Infineum International Ltd.
    Inventors: Raymond F. Watts, Roger K. Nibert, Keith R. Gorda