Patents by Inventor Nobuhito Amemiya

Nobuhito Amemiya 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).

  • Pentaerythritol tetraester
    Patent number: 8772530
    Abstract: A pentaerythritol tetraester which is a mixed ester of pentaerythritol and carboxylic acids is provided, wherein the carboxylic acids consist of isobutyric acid and 3,5,5-trimethylhexanoic acid and the molar ratio of isobutyric acid to 3,5,5-trimethylhexanoic acid in the carboxylic acids is 36/64 to 80/20. The pentaerythritol tetraester may be used in a refrigerant oil or the like which exhibits excellent miscibility with a difluoromethane refrigerant among other properties.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: July 8, 2014
    Assignee: KH Neochem Co., Ltd.
    Inventors: Toshihiro Inayama, Satoshi Hiyoshi, Nobuhito Amemiya, Shigehisa Kishimoto
  • Pentaerythritol tetraester
    Patent number: 8664430
    Abstract: A pentaerythritol tetraester which is a mixed ester of pentaerythritol and carboxylic acids is provided, wherein the carboxylic acids comprise isobutyric acid and 2-ethylhexanoic acid and the molar ratio of isobutyric acid to 2-ethylhexanoic acid in the carboxylic acids is 36/64 to 83/17. The pentaerythritol tetraester may be used in a refrigerant oil or the like which exhibits excellent miscibility with a difluoromethane refrigerant among other properties.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: March 4, 2014
    Assignee: KH Neochem Co., Ltd.
    Inventors: Toshihiro Inayama, Satoshi Hiyoshi, Nobuhito Amemiya, Shigehisa Kishimoto
  • Additive for oils and lubricant comprising the same
    Patent number: 8455413
    Abstract: An additive for oils that is capable of imparting oils such as lubricant base oils with superior wear resistance properties or friction resistance properties, and a lubricant. An additive for oils that includes a compound represented by formula (I) is used. A and B each represents a single bond or hydrocarbylene or the like, X and Y each represents a sulfur atom or single bond, and W and Z each represents a hydrogen atom or —NR1R2 or the like, provided that W and Z are not both hydrogen atoms. R1 and R2 each represents a hydrogen atom, a hydrocarbyl or a hydrocarbylcarbonyl or the like, and n and m each represents an integer of 0 to 5.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: June 4, 2013
    Assignee: KH Neochem Co., Ltd.
    Inventors: Satoshi Hiyoshi, Shingo Nakayama, Nobuhito Amemiya, Shigeaki Kato, Toshihiro Inayama, Yukihiro Isogai, Ichiro Minami, Shigeyuki Mori
  • PENTAERYTHRITOL TETRAESTER
    Publication number: 20130131374
    Abstract: A pentaerythritol tetraester which is a mixed ester of pentaerythritol and carboxylic acids is provided, wherein the carboxylic acids consist of isobutyric acid and 3,5,5-trimethylhexanoic acid and the molar ratio of isobutyric acid to 3,5,5-trimethylhexanoic acid in the carboxylic acids is 36/64 to 80/20. The pentaerythritol tetraester may be used in a refrigerant oil or the like which exhibits excellent miscibility with a difluoromethane refrigerant among other properties.
    Type: Application
    Filed: June 30, 2011
    Publication date: May 23, 2013
    Applicant: KH NEOCHEM CO., LTD.
    Inventors: Toshihiro Inayama, Satoshi Hiyoshi, Nobuhito Amemiya, Shigehisa Kishimoto
  • PENTAERYTHRITOL TETRAESTER
    Publication number: 20130131373
    Abstract: A pentaerythritol tetraester which is a mixed ester of pentaerythritol and carboxylic acids is provided, wherein the carboxylic acids comprise isobutyric acid and 2-ethylhexanoic acid and the molar ratio of isobutyric acid to 2-ethylhexanoic acid in the carboxylic acids is 36/64 to 83/17. The pentaerythritol tetraester may be used in a refrigerant oil or the like which exhibits excellent miscibility with a difluoromethane refrigerant among other properties.
    Type: Application
    Filed: June 30, 2011
    Publication date: May 23, 2013
    Applicant: KH NEOCHEM CO., LTD.
    Inventors: Toshihiro Inayama, Satoshi Hiyoshi, Nobuhito Amemiya, Shigehisa Kishimoto
  • ADDITIVE FOR OILS AND LUBRICANT COMPRISING THE SAME
    Publication number: 20100298183
    Abstract: An additive for oils that is capable of imparting oils such as lubricant base oils with superior wear resistance properties or friction resistance properties, and a lubricant. An additive for oils that includes a compound represented by formula (I) is used. A and B each represents a single bond or hydrocarbylene or the like, X and Y each represents a sulfur atom or single bond, and W and Z each represents a hydrogen atom or —NR1R2 or the like, provided that W and Z are not both hydrogen atoms. R1 and R2 each represents a hydrogen atom, a hydrocarbyl or a hydrocarbylcarbonyl or the like, and n and m each represents an integer of 0 to 5.
    Type: Application
    Filed: May 7, 2008
    Publication date: November 25, 2010
    Applicant: KYOWA HAKKO CHEMICAL CO., LTD.
    Inventors: Satoshi Hiyoshi, Shingo Nakayama, Nobuhito Amemiya, Shigeaki Kato, Toshihiro Inayama, Yukihiro Isogai, Ichiro Minami, Shigeyuki Mori
  • Process for producing 1,5-pentanediol derivatives
    Patent number: 6072089
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: June 6, 2000
    Assignee: Kyowa Yuka Co., Ltd.
    Inventors: Satoru Mizutani, Toshiaki Ogata, Nobuhito Amemiya, Kenji Mutoh