Patents by Inventor Mineo Kagaya

Mineo Kagaya 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: 8415283
    Abstract: The invention provides lubricant compositions for diesel engines having a regenerative DPF, which prolong life of the DPF by inhibiting accumulation of components depositable on DPF inner walls, diesel engine systems having a regenerative DPF with prolonged life, and a method for inhibiting accumulation of components depositing on the DPF in the system. The present composition is for diesel engines having a regenerative DPF and running on diesel fuel with <10 mass ppm sulfur, contains a base oil and additives including (A) metal detergent, (B) ashless dispersant, and (C) phosphorus-based anti-wear agent, and satisfies the conditions of a sulfated ash content of 0.4-2 mass %, an atomic ratio of metal from component (A) to the total phosphorus of 0.2-3, an atomic ratio of the total boron to metal from component (A) of 0.2-2, and an atomic ratio of the total sulfur to metal from component (A) of 0-4.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: April 9, 2013
    Assignees: Nippon Oil Corporation, Japan Petroleum Energy Center
    Inventors: Isao Kurihara, Mineo Kagaya
  • Publication number: 20100147238
    Abstract: The invention provides lubricant compositions for diesel engines having a regenerative DPF, which prolong life of the DPF by inhibiting accumulation of components depositable on DPF inner walls, diesel engine systems having a regenerative DPF with prolonged life, and a method for inhibiting accumulation of components depositing on the DPF in the system. The present composition is for diesel engines having a regenerative DPF and running on diesel fuel with <10 mass ppm sulfur, contains a base oil and additives including (A) metal detergent, (B) ashless dispersant, and (C) phosphorus-based anti-wear agent, and satisfies the conditions of a sulfated ash content of 0.4-2 mass %, an atomic ratio of metal from component (A) to the total phosphorus of 0.2-3, an atomic ratio of the total boron to metal from component (A) of 0.2-2, and an atomic ratio of the total sulfur to metal from component (A) of 0-4.
    Type: Application
    Filed: February 19, 2010
    Publication date: June 17, 2010
    Applicants: NIPPON OIL CORPORATION, JAPAN PETROLEUM ENERGY CENTER
    Inventors: Isao KURIHARA, Mineo Kagaya
  • Publication number: 20070179070
    Abstract: The invention provides lubricant compositions for diesel engines having a regenerative DPF, which prolong life of the DPF by inhibiting accumulation of components depositable on DPF inner walls, diesel engine system shaving a regenerative DPF with prolonged life, and a method for inhibiting accumulation of components depositing on the DPF in the system. The present composition is for diesel engines having a regenerative DPF and running on diesel fuel with <10 mass ppm sulfur, contains a base oil and additives including (A) metal detergent, (B) ashless dispersant, and (C) phosphorus-based anti-wear agent, and satisfies the conditions of a sulfated ash content of 0.4-2 mass %, an atomic ratio of metal from component (A) to the total phosphorus of 0.2-3, an atomic ratio of the total boron to metal from component (A) of 0.2-2, and an atomic ratio of the total sulfur to metal from component (A) of 0-4.
    Type: Application
    Filed: March 16, 2005
    Publication date: August 2, 2007
    Inventors: Isao Kurihara, Mineo Kagaya
  • Patent number: 6627583
    Abstract: An engine oil composition characterized by containing a major amount of lubricating base oil and (a) 0.01 to 30% by weight of an overbasic oil-soluble metal salt prepared by use of an alkaline-earth metal borate, (b) 0.01 to 5% by weight of a molybdenum dithiocarbamate, and (c) 0.01 to 5% by weight of an antioxidant as essential components, on the basis of the total amount of the composition.
    Type: Grant
    Filed: January 30, 2001
    Date of Patent: September 30, 2003
    Assignee: Nippon Mitsubishi Oil Corporation
    Inventors: Kiyoshi Inoue, Jinichi Igarashi, Mituaki Ishimaru, Mineo Kagaya, Masakuni Hirata
  • Publication number: 20010044387
    Abstract: An engine oil composition characterized by containing a major amount of lubricating base oil and (a) 0.01 to 30% by weight of an overbasic oil-soluble metal salt prepared by use of an alkaline-earth metal borate, (b) 0.01 to 5% by weight of a molybdenum dithiocarbamate, and (c) 0.01 to 5% by weight of an antioxidant as essential components, on the basis of the total amount of the composition.
    Type: Application
    Filed: January 30, 2001
    Publication date: November 22, 2001
    Applicant: Nippon Mitsubishi Oil Corporation
    Inventors: Kiyoshi Inoue, Jinichi Igarashi, Mituaki Ishimaru, Mineo Kagaya, Masakuni Hirata
  • Patent number: 5663125
    Abstract: A lubricating oil for two-cycle engines, which comprises a polyoxyalkylene glycol derivative represented by the following formula as a base oil, can be used to lubricate bearing portions and frictional portions of an two-cycle engine, so that the engine can be remarkably improved in generation of smoke, starting performance, cleanliness to prevent its exhaust system from clogging with carbon, cleanliness at high- or low temperature, and anti-seizure performance.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: September 2, 1997
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Mitsuaki Ishimaru, Mineo Kagaya, Noboru Ishida
  • Patent number: 5624890
    Abstract: A lubricating oil composition for two-stroke cycle cylinder injection engines contains as essential ingredients: (A): a base oil containing (1) 10-30% by mass of polybutene with number-average molecular weight 250-350 on the basis of a total amount of the base oil, (2) 30-60% by mass of polybutene with number-average molecular weight 450-550 on the basis of the total amount of the base oil, and (3) 15-40% by mass of mineral oil and/or a synthetic oil, which is other than polybutene, with kinematic viscosity 2-35 mm.sup.2 /s at 100.degree. C., on the basis of the total amount of the base oil; and (B): 2-15 parts by mass of alkylaminophenol having an alkyl group with 8-400 carbon atoms relative to 100 parts by mass of the base oil.
    Type: Grant
    Filed: November 27, 1995
    Date of Patent: April 29, 1997
    Assignees: Nippon Oil Company, Ltd, Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Mineo Kagaya, Kazuo Miyazawa
  • Patent number: 5543081
    Abstract: A method of making a novel lubricant additive comprising a boric acid modified aminoamide compound is disclosed. A lubricating oil composition incorporating the modified aminoamide compound is also disclosed, which exhibits enhanced high-temperature cleanliness when used particularly for two stroke cycle engines.
    Type: Grant
    Filed: October 16, 1992
    Date of Patent: August 6, 1996
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Noboru Ishida, Mitsuaki Ishimaru, Mineo Kagaya
  • Patent number: 5411672
    Abstract: The lubricating oil composition of the present invention comprising an ester mixture as the main ingredient consisting of (A) 60-95% by weight of an ester of a hindered alcohol with a straight-chain saturated fatty acid having 8-12 carbon atoms, and (B) 5-40% by weight of a complex ester of a hindered alcohol with a straight-chain saturated fatty acid having 8-12 carbon atoms and also with a dibasic acid having 20-50 carbon atoms, the composition having excellent performances such as biodegradability, high-temperature engine cleanliness, lubricity and piston seizure preventiveness which are conductive to environmental protection.
    Type: Grant
    Filed: November 10, 1993
    Date of Patent: May 2, 1995
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Mineo Kagaya, Mitsuaki Ishimaru, Hiroaki Ishii
  • Patent number: 4994196
    Abstract: A two-cycle engine oil composition comprising:(I) 100 parts by weight of a base oil composed of (A) 20 to 80% by weight of a copolymer of an .alpha.-olefin with an ester of a dicarboxylic acid, said copolymer having a kinematic viscosity of 20 to 50 cSt at 100.degree. C., and (B) 80 to 20% by weight of an ester of pentaerythritol with a fatty acid, said ester having a kinematic viscosity of 4 to 20 cSt at 100.degree. C., and(II) 0.4 to 6 parts by weight of calcium phenate incorporated as an indispensable ingredient in the base oil.
    Type: Grant
    Filed: October 13, 1989
    Date of Patent: February 19, 1991
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Mineo Kagaya, Mitsuaki Ishimaru
  • Patent number: 4299714
    Abstract: In a central system fluid composition comprising (1) 70 to 95% by weight of a hydrocarbon base oil and (2) 5 to 30% by weight of a viscosity index improver, the improvement wherein said hydrocarbon base oil (1) comprises (a) 25% by weight to less than 50% by weight, based on the weight of the hydrocarbon base oil (1), of an oligomer of 1-decene having an average molecular weight of 200 to 600 and (b) more than 50% by weight to 75% by weight of a petroleum lubricating oil fraction, and said viscosity index improver (2) is a polymethacrylate having a viscosity average molecular weight of 10,000 to 700,000 obtained by polymerizing at least one ester of a saturated monohydric aliphatic alcohol having 1 to 18 carbon atoms with methacrylic acid.
    Type: Grant
    Filed: August 4, 1980
    Date of Patent: November 10, 1981
    Assignees: Nippon Oil Company, Ltd., Nissan Motor Co., Ltd.
    Inventors: Kensuke Sugiura, Mineo Kagaya, Hiroyuki Aoki, Takeitiro Takehara
  • Patent number: 4031020
    Abstract: A central system fluid composition composed of 5-30% by weight of a viscosity index improver, up to 10% by weight of another additive, and the balance being a hydrocarbon-type base oil, which is characterized in that the hydrocarbon-type base oil is composed of 50-100% by weight, based on its total weight, of at least one chief base oil component selected from the group consisting ofA. polybutenes with an average molecular weight of 100 - 500,B. homo- or copolymers with an average molecular weight of 100 to 500 of at least one .alpha.-olefin containing 2-12 carbons, excepting butenes, andC. hydrogenation products boiling at 250.degree.-380.degree. C of high aromatic components which are obtained by cracking petroleum oils,And 0-50% by weight, based on its total weight, of a mineral oil; and that the viscosity index improver is composed of at least one component selected from the group consisting of1.
    Type: Grant
    Filed: May 29, 1975
    Date of Patent: June 21, 1977
    Assignees: Nippon Oil Company, Ltd., Nissan Motor Co., Ltd.
    Inventors: Kensuke Sugiura, Mineo Kagaya, Tokuo Fujisou, Hiroyuki Aoki, Takeichiro Takehara, Shigenori Kurata