Patents Examined by Jacqueline V. Howard
  • Patent number: 6383991
    Abstract: The present invention relates to a cutting oil comprising (a) a polyether compound represented by the formula (I): R1O(EO)m(AO)nR2  (I) wherein each of R1 and R2, which may be identical or different, is hydrogen atom or a hydrocarbon group having 1 to 24 carbon atoms, at least one of which is a hydrocarbon group; EO is oxyethylene group; AO is an oxyalkylene group having 3 or 4 carbon atoms; and each of m and n is 1 to 50, wherein a sum of m and n is from 4 to 100; a cutting oil composition comprising the above cutting oil and an abrasive; a cutting method using the above cutting oil composition; and a process of cleaning a wafer, comprising the steps of cleaning a wafer obtainable by cutting an ingot with a wire saw using the above cutting oil composition; heating the resulting waste water to a temperature equal to or higher than a cloud point of a polyether compound represented by the formula (I) contained in the waste water, to allow separation into an oil phase and an aqueous phase; and removi
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: May 7, 2002
    Assignee: Kao Corporation
    Inventors: Jiro Hashimoto, Toshiya Hagihara, Kazuhiko Nishimoto
  • Patent number: 6375689
    Abstract: In a process for producing stable emulsions of at least two substantially immiscible fluids, particularly emulsions of a liquid fuel with water, a considerable increase in the efficiency of the emulsion-formation process is achieved by injecting the fluids to be emulsified into an emulsification chamber provided with an injection system which imparts to the fluids a motion in a direction which is substantially perpendicular to the general direction in which the fluids travel through the emulsification chamber. This injection system can be provided by means of a diffuser having an inlet hole, through which a stream of liquid is fed in a substantially axial direction, and at least one outlet hole, which leads into the chamber and whose axis lies on a plane which is substantially perpendicular to the direction of the inlet stream.
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: April 23, 2002
    Inventor: Ernesto Marelli
  • Patent number: 6376431
    Abstract: A carbon/carbon (C/C) composite comprising crystalline silicon carbide which is essentially uniformly distributed on both internal and external surfaces of the composite in a low concentration, as well as a process for producing the composite and the use of the composite in brake materials for industrial roll goods, automotives, trucks, trains and aircrafts. It has been discovered that small amounts of crystalline silicon carbide uniformly distributed throughout the carbon/carbon composite results in reduced wear with either no change or a slight increase in the friction coefficient.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: April 23, 2002
    Assignee: Honeywell International Inc.
    Inventors: Roger L. K. Matsumoto, George D. Forsythe
  • Patent number: 6376728
    Abstract: Method of inhibiting polymerization of alkenyl monomers comprising contacting the alkenyl monomers with: wherein R1 and R2 independently of one another are alkyl, phenyl, aryl, alkoxy, or carboxy groups; and oxygen. Mixture comprising: a) alkenyl monomers with:  wherein R1 and R2 independently of one another are alkyl, phenyl, aryl, alkoxy or carboxy groups; and c) oxygen.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: April 23, 2002
    Assignee: Hercules Incorporated
    Inventors: Sherif Eldin, John Link
  • Patent number: 6371998
    Abstract: Liquid energy sources, e.g., liquid fuels comprising lipid vesicles having fuel additives such as water are disclosed herein. The liquid energy sources, methods for preparation, and methods of enhancing engine performance disclosed herein employing the lipid vesicles result in enhanced fuel efficiency and/or lowered engine emissions. The invention further relates to liquid energy sources containing such additives which further comprise a polymeric dispersion assistant, which reduces the interfacial tension and coalescence of vesicles during dispersion process and storage, and thereby provide transparent looks to the liquid energy source.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: April 16, 2002
    Assignee: IGEN, Inc.
    Inventor: Rajiv Mathur
  • Patent number: 6372695
    Abstract: A ball screw is provided which makes it easy to determine the degree of deterioration of lubricating grease so that new lubricating grease can be supplied efficiently without loss. The ball screw includes a threaded shaft formed with a thread groove in its outer peripheral surface, a nut formed with a thread groove in its inner peripheral surface, and a plurality of balls rollably retained in a circulating passage comprising a helical passage formed between these thread grooves when the nut is fitted on the threaded shaft, and a passage connecting both ends of the helical passage. The balls and the circulating passage are lubricated by a lubricating grease which has a brightness of 1 or over and in which a base oil having a viscosity at 100° C. of 3.0-7.5 mm2/s is thickened by a urea-family thickener.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: April 16, 2002
    Assignee: NTN Corporation
    Inventor: Kimihito Ushida
  • Patent number: 6372697
    Abstract: This invention concerns the use, in a cold drawing lubricating solution, as adhesive and lubricating agent, for a steel wire trimmed with brass and rubber, of an aqueous suspension comprising at least a cobalt and/or nickel salt compound of a saturated or unsaturated carboxylic acid (i), or a phosphate ester (ii), or a cobalt and/or nickel boroacylate (iii); and at least a non-ionic or anionic surfactant; the compound (i), (ii), and/or (iii)/surfactant weight ratio ranging between 0.5 and 10. The invention also concerns said suspension and preparation methods thereof. The invention further concerns a cold drawing lubricating solution comprising said suspension.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: April 16, 2002
    Assignee: Rhodia Chimie
    Inventors: Gilles Lorentz, Hélène Lannibois-Drean
  • Patent number: 6365558
    Abstract: A composition is disclosed which comprises (A) At least one oil comprising a synthetic triglyceride, a natural oil or a derivative of a natural oil; (B) a hydrogenated block copolymer comprising a normal block copolymer or a random block copolymer, said normal block copolymer made from a vinyl substituted aromatic and an aliphatic conjugated diene, said normal block copolymer having from two to about five polymer blocks with at least one polymer block of said vinyl substituted aromatic and at least one polymer block of said aliphatic conjugated diene, said random block copolymer made from vinyl substituted aromatic and aliphatic conjugated diene monomers, the total amount of said vinyl substituted aromatic blocks in said block copolymer being in the range of from about 20 percent to about 70 percent by weight and the total amount of said diene blocks in said block copolymer being in the range of from about 30 percent to about 80 percent by weight; the number average molecular weight of said normal block cop
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 2, 2002
    Assignee: The Lubrizol Corporation
    Inventor: Kasturi Lal
  • Patent number: 6362136
    Abstract: This invention relates to compositions containing a sulfur containing antiwear/extreme pressure agent, basic nitrogen compound or a mixture thereof together with a hydrocarbyl mercaptan. The composition may additionally contain a phosphorus or boron antiwear or extreme pressure agent, a dispersant or an overbased metal salt. The invention also relates to lubricants, functional fluids, and concentrates containing the same. Seals, e.g. nitrile, polyacrylate, and fluoroelastomer, in contact with these composition have reduced deterioration. With the use of these compositions, lubricants, and functional fluids, the seals' useful life is extended.
    Type: Grant
    Filed: March 26, 1996
    Date of Patent: March 26, 2002
    Assignee: The Lubrizol Corporation
    Inventors: Robert C. Richardson, Donald J. Marn
  • Patent number: 6362139
    Abstract: A method of improving the efficiency of an air conditioning and refrigeration system, comprising introducing into the system a mixture of a carrier with an energy transferring polar compound comprising a sulfur component; a novel additive in a polar compound containing a sulfur component; and an air conditioning system utilizing a polar compound containing a sulfur component.
    Type: Grant
    Filed: May 2, 2000
    Date of Patent: March 26, 2002
    Inventors: Tony Pio Sgarbi, Teresa Leigh Barr
  • Patent number: 6362135
    Abstract: This invention discloses novel catalyzed surface composition altering formulations and methods and catalyzed surface coating formulations and methods, which contain one or more catalysts, along with optional other ingredients, wherein the catalysts serve to effect in situ chemical bonding reactions in that the catalysts function to initiate, to promote, to accelerate, and/or to increase the formation and yield of persistent, solid, corrosion-resistant, impact-resistant, wear-resistant, and/or non-stick surface compositions and surface coating films, which may exhibit pigmentation and other aesthetic features, and may be designed to be environmentally benign. The disclosed formulation and methods may be used to alter the surface composition and to coat the surfaces of vehicles, such as aircraft, and to improve the anti-icing characteristics of the vehicle surfaces.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: March 26, 2002
    Assignee: Platinum Research Organization, L.L.C.
    Inventor: F. Conrad Greer
  • Patent number: 6358890
    Abstract: A noise inhibitor for preventing a creaking noise production consisting of: a non-ionic or a carboxylic acid type negative ionic oil-soluble surfactant; and water or a wax emulsion solution, the surfactant being diluted by 2 to 15 times with the water or the wax emulsion solution. The range of HLB of the surfactant is from 8.0 to 10 and the range of pH of the noise inhibitor is from 7.5 to 9.5.
    Type: Grant
    Filed: April 21, 2000
    Date of Patent: March 19, 2002
    Assignee: Namba Press Works Co., Ltd.
    Inventors: Yasumasa Senoo, Takao Komatsubara, Fumio Goto
  • Patent number: 6358895
    Abstract: Non-aqueous functional fluids are treated to avoid degradation or to recondition degraded fluids by a process which comprises contacting the fluid with an anionic ion-exchange resin and subsequently removing water by vacuum dehydration. The fluids can be restored and maintained at a water content of less than 0.1% w/w and an acid number of less than 0.2 mgKOH/gm. The fluid is preferably a triaryl phosphate based fluid. Treated fluids may exhibit improved properties especially increased resistivity.
    Type: Grant
    Filed: September 16, 1997
    Date of Patent: March 19, 2002
    Assignee: PABU Services, Inc.
    Inventor: William David Phillips
  • Patent number: 6355601
    Abstract: An object of the present invention is to provide a friction material having excellent friction and wear characteristics even at a high temperature, and excellent productivity and workability. The friction material of the present invention is blended with scaly boehmite as a friction adjustment agent.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: March 12, 2002
    Assignee: Otsuka Kagaku Kabushiki Kaisha
    Inventors: Minoru Takenaka, Hiroshi Ogawa, Hiroshi Shibutani
  • Patent number: 6355603
    Abstract: Thermal reaction products of maleic anhydride and oligoalkenes are obtainable by oligomerization of linear C8- to C12-1-alkenes, preferably in the presence of a titanium, zirconium or hafnium metallocene catalyst and of an activator based on organoaluminum, organoboron or carbocationic compounds and have a vinylidene double bond content of more than 30% and have a number average molecular weight from 1000 to 20,000. Derivatives thereof with amines or alcohols are used as fuel additives and lubricant additives.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: March 12, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans Peter Rath, Helmut Mach
  • Patent number: 6355604
    Abstract: The multifunctional aqueous lubricant according to the invention comprises at least one water-soluble salt of dithiodiglycolic acid and at least one water-soluble compound chosen from the group consisting of: a) phosphoric esters of general formula:  in which R represents an alkyl, alkenyl or alkylaryl radical having from 6 to 20 carbon atoms, k is equal to 2 or 3, m is a number ranging from 0 to 20 and x is equal to 1 or 2, and their salts, and b) water-soluble salts of alkylthio acids of general formula: R′—S—(CH2)n—COOH  (II)  in which n is a number ranging from 1 to 10 and R′ represents an alkyl, alkenyl or aryl radical having from 6 to 20 carbon atoms,  the ratio by mass of dithiodiglycolic acid to compound(s) I and/or II being between 1/1 and 50/1.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: March 12, 2002
    Assignee: Atofina
    Inventor: François Guillemet
  • Patent number: 6350723
    Abstract: Block copolymers having a molecular weight distribution of between 1.0 and 5.0 comprising at least one block of polymerized alkyl methacrylate monomer(s), wherein from 50 to 100% by weight of the monomers for forming the alkyl methacrylate block are C12-C30 alkyl methacrylates, and a block of a polymerized conjugated alkadiene. The block copolymers of the present invention are useful as viscosity index improvers in lubricating oil compositions as well as compatibilizers for compositions containing both polymethacrylates and olefin copolymers or hydrogenated block polymers.
    Type: Grant
    Filed: November 29, 1999
    Date of Patent: February 26, 2002
    Assignee: Ethyl Corporation
    Inventors: Munmaya K. Mishra, Roderic P. Quirk, Robert S. Porzio
  • Patent number: 6339049
    Abstract: This invention relates to grease compositions containing mineral oil and/or synthetic oil as base oil, (A) lithium stearate as thickener, and (B) one kind or two kinds of more of compounds selected from a group of oxidized paraffins and diphenyl hydrogenphosphite and displaying a worked penetration in the range 270-350 and also to bearings such a s linear guides, ball screws, and rolling bearings sealed with said grease compositions. This invention can provide grease compositions of low dust emission which perform with an excellent balance of low dust emission, low rolling characteristics and fretting resistance, extend the lubricating period, reduce the maintenance cost, and are suitable for use in a clean environment. This invention can also provide bearings sealed with said grease compositions of low dust emission suitable for use in a clean environment such as semiconductor manufacturing equipment, liquid crystal manufacturing equipment, and electronic computers.
    Type: Grant
    Filed: November 8, 2000
    Date of Patent: January 15, 2002
    Assignees: THK Co., Ltd., Nippon Mitsubushi Oil Corporation
    Inventors: Hiroshi Funahashi, Yoshio Taki, Yoshiyuki Honjo, Tomonori Kaneko, Hirotugu Kinoshita, Kiyomi Sakamoto
  • Patent number: 6339050
    Abstract: The present invention relates to a brake fluid composition comprising a base fluid, a metal corrosion inhibitor, and an antioxidant where said base fluid comprises 70 to 80 wt. % of glycol ether, 18 to 28 wt. % of boric acid ester and 0.8 to 1.2 wt. % of silane-type stabilizer.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: January 15, 2002
    Assignee: Hyundai Motor Company
    Inventor: Ju Chun Park
  • Patent number: RE37629
    Abstract: Novel engine fuels and engine fuel additives comprising terpenes, aliphatic hydrocarbons, and lower alcohols are disclosed.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: April 9, 2002
    Inventor: Joe S. Wilkins, Jr.