Patents by Inventor Jiro Hashimoto

Jiro Hashimoto 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: 7993543
    Abstract: The base oil for the refrigerating machine oil used with a carbon dioxide refrigerant of the invention is characterized by comprising a complete ester of a fatty acid in which the proportion of C14-C22 branched fatty acid is 40-100% by mole and a polyhydric alcohol. The refrigerating machine oil used with a carbon dioxide refrigerant according to the invention is characterized by comprising the base oil for the refrigerating machine oil used with a carbon dioxide refrigerant according to the invention. The base oil for the refrigerating machine oil used with a carbon dioxide refrigerant and the refrigerating machine oil used with a carbon dioxide refrigerant according to the invention, when used together with a carbon dioxide refrigerant, exhibit excellent stability and electrical insulating properties, and have suitable compatibility with refrigerants while allowing adequate lubricity to be exhibited without increasing the viscosity of the base oil.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: August 9, 2011
    Assignees: Nippon Oil Corporation, Kao Corporation
    Inventors: Kazuo Tagawa, Ken Sawada, Yuji Shimomura, Katsuya Takigawa, Jiro Hashimoto, Masataka Negishi
  • Patent number: 7767838
    Abstract: The invention provides a process for producing a monoglyceride-containing composition by reacting glycerin with at least one kind of acyl-containing compound selected from fatty acid and glycerin ester, the reaction being conducted with a catalyst containing at least one metal selected from iron, cobalt and manganese in an amount of 0.1 to 60 ppm in terms of metal (weight ratio to the total weight of glycerin and the acyl-containing compound), as well as a process for producing a monoglyceride-containing composition by reacting glycerin with at least one kind of acyl-containing compound selected from fatty acid and glycerin ester, including a step of maintaining the amount of water at 500 to 5000 ppm in the reaction system after the degree of conversion in the reaction of glycerin with fatty acid reaches 90% or more based on the fatty acid, or during the ester exchange reaction of glycerin with glycerin ester.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: August 3, 2010
    Assignee: Kao Corporation
    Inventors: Hiroki Sawada, Jiro Hashimoto, Haruya Mino, Toshitsugu Maeda
  • Publication number: 20090200507
    Abstract: The base oil for the refrigerating machine oil used with a carbon dioxide refrigerant of the invention is characterized by comprising a complete ester of a fatty acid in which the proportion of C14-C22 branched fatty acid is 40-100% by mole and a polyhydric alcohol. The refrigerating machine oil used with a carbon dioxide refrigerant according to the invention is characterized by comprising the base oil for the refrigerating machine oil used with a carbon dioxide refrigerant according to the invention. The base oil for the refrigerating machine oil used with a carbon dioxide refrigerant and the refrigerating machine oil used with a carbon dioxide refrigerant according to the invention, when used together with a carbon dioxide refrigerant, exhibit excellent stability and electrical insulating properties, and have suitable compatibility with refrigerants while allowing adequate lubricity to be exhibited without increasing the viscosity of the base oil.
    Type: Application
    Filed: March 20, 2007
    Publication date: August 13, 2009
    Inventors: Kazuo Tagawa, Ken Sawada, Yuji Shimomura, Katsuya Takigawa, Jiro Hashimoto, Masataka Negishi
  • Publication number: 20070129560
    Abstract: The invention provides a process for producing a monoglyceride-containing composition by reacting glycerin with at least one kind of acyl-containing compound selected from fatty acid and glycerin ester, the reaction being conducted with a catalyst containing at least one metal selected from iron, cobalt and manganese in an amount of 0.1 to 60 ppm in terms of metal (weight ratio to the total weight of glycerin and the acyl-containing compound), as well as a process for producing a monoglyceride-containing composition by reacting glycerin with at least one kind of acyl-containing compound selected from fatty acid and glycerin ester, including a step of maintaining the amount of water at 500 to 5000 ppm in the reaction system after the degree of conversion in the reaction of glycerin with fatty acid reaches 90% or more based on the fatty acid, or during the ester exchange reaction of glycerin with glycerin ester.
    Type: Application
    Filed: June 3, 2004
    Publication date: June 7, 2007
    Applicant: Kao Corporation
    Inventors: Hiroki Sawada, Jiro Hashimoto, Haruya Mino, Toshitsugu Maeda
  • 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: 5855628
    Abstract: A gas oil composition having improved lubricity which can reduce wear of metallic surfaces which the composition contacts comprises a gas oil having a low sulfur content, and a glycerol/monofatty acid ester and a glycerol/difatty acid ester which have a specific fatty acid residue composition
    Type: Grant
    Filed: April 24, 1996
    Date of Patent: January 5, 1999
    Assignee: Kao Corporation
    Inventors: Jiro Hashimoto, Junzo Ito, Masahiro Fukuda
  • Patent number: 5670464
    Abstract: An additive for lubricating oils for diesel engines, comprising one or more kinds of amino alcohols which have one or more amino groups and one or more hydroxyl groups in a molecule and possess a function of dispersing water-containing calcium sulfate in oil, the hydroxyl groups being bound to the carbon atoms at the .beta.-positions to the amino groups; and a lubricating oil composition for diesel engines, which comprises the additives in an amount of from 0.1 to 10% by weight.
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: September 23, 1997
    Assignee: Kao Corporation
    Inventors: Kazuo Kita, Takashi Ohtani, Jiro Hashimoto
  • Patent number: 5522906
    Abstract: A gasoline composition comprising (a) gasoline, (b) a deposit inhibitor or a detergent containing a basic nitrogen atom, (c) a carrier oil, and (d) one or more compounds selected from the group consisting of an ester of a fatty acid and an alkylene oxide addition compound to bisphenol, a compound obtained by the ester exchange reaction of an alcohol and a triglyceride-type fat or oil, an aliphatic or aromatic carboxylic acid, a metal salt of an aliphatic or aromatic carboxylic acid, an ester of an aliphatic or aromatic carboxylic acid and an alcohol, and an ester of boric acid. The composition has superior heat resistance and is excellent in removing deposits in the fuel intake systems and in keeping the systems clean.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: June 4, 1996
    Assignee: Kao Corporation
    Inventors: Jiro Hashimoto, Shogo Nomoto, Hitoshi Funada
  • Patent number: 5298038
    Abstract: An additive for fuel oil comprises a compound comprising (a) an alkyl group having 9 to 37 carbon atoms and containing a branched alkyl having 3 to 18 carbon atoms and (b) an amine group having at least one polyoxyalkylene having 2 to 4 carbon atoms or an amineoxide having at least one polyoxyalkylene having 2 to 4 carbon atoms. This additive is effective for cleaning the injection nozzle of coking.
    Type: Grant
    Filed: September 25, 1991
    Date of Patent: March 29, 1994
    Assignee: Kao Corporation
    Inventors: Jiro Hashimoto, Shogo Nomoto
  • Patent number: 5089029
    Abstract: A fuel oil composition comprises fuel oil and 0.1 to 50,000 ppm of an additive compound having the formula (I) in which R is a hydrocarbyl radical having 10 to 50 carbon atoms, A is an alkylene group having 2 to 6 carbon atoms, m is an integer of 10 to 50 and n is an integer of 1 to 3. It is improved in cleaning property.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: February 18, 1992
    Assignee: Kao Corporation
    Inventors: Jiro Hashimoto, Shogo Nomoto, Masanori Nozawa, Makoto Kubo