Patents by Inventor Mikito Nishii

Mikito Nishii 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).

  • Coolant and cooling system
    Patent number: 7501196
    Abstract: A coolant comprising a nonaqueous base. A phase change material may be dispersed or a highly heat conductive material may be dispersed or dissolved in the nonaqueous base. A nonaqueous coolant for a fuel cell excellent in heat transfer characteristics is provided as a coolant for fuel cell stacks.
    Type: Grant
    Filed: January 11, 2005
    Date of Patent: March 10, 2009
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Mikito Nishii, Hiroyuki Arai, Tsutomu Sakai, Mitsuru Kondo
  • 1,3,5-benzene tricarboxylic acid coolant composition
    Patent number: 7462295
    Abstract: A coolant composition having anticorrosion properties against both aluminum and magnesium is provided. A coolant composition comprises a melting point depression agent selected from glycols and alcohols as the main component, and it contains a corrosion inhibitor selected from fluorides and a tribasic acid of an organic carboxylic acid or an alkali metal salt thereof.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: December 9, 2008
    Assignees: Toyota Jidosha Kabushiki Kaisha, Japan Chemical Industries Co.
    Inventors: Mikito Nishii, Hiroyuki Arai, Sadayoshi Suzuki, Hideyuki Tami, Shigehiko Sato
  • Coolant, method of enclosing coolant, and cooling system
    Patent number: 7344655
    Abstract: A coolant used for cooling down a stack of fuel cells includes: a solution mixture of water and a glycol as base material; and a rust-preventive additive that functions to keep an electric conductivity of the coolant at a low level and to maintain a hydrogen ion exponent of the coolant in a substantially neutral level. The rust-preventive agent includes at least one of an alkaline ethanolamine additive, such as triethanolamine, diethanolamine, or monoethanolamine, and an acidic additive selected among the group consisting of triazole compounds, phosphoric acid compounds, and organophosphoric acid compounds.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: March 18, 2008
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Mikito Nishii, Masamine Tanikawa, Hisanori Watanabe, Yoshihisa Kurokawa, Satoshi Sugiyama, Kazuhito Yaeda
  • Coolant Composition, Cooling System And Process For Producing Coolant
    Publication number: 20070298291
    Abstract: When a coolant composition characterized in that ion exchange resin is uniformly dispersed in a water-based coolant is used as a coolant for a fuel cell stack from a viewpoint of high-voltage safety, eluted substance from parts in the cooling system is removed in the initial stages and with the passage of time, so as to stably maintain insulation properties of the coolant.
    Type: Application
    Filed: July 22, 2005
    Publication date: December 27, 2007
    Inventors: Mikito Nishii, Shinichi Ogura, Kazuhito Yaeda, Hideyuki Tami, Hirohisa Mochizuki, Nobukazu Takagi
  • Coolant and cooling system
    Publication number: 20070104988
    Abstract: A coolant comprising a nonaqueous base. A phase change material may be dispersed or a highly heat conductive material may be dispersed or dissolved in the nonaqueous base. A nonaqueous coolant for a fuel cell excellent in heat transfer characteristics is provided as a coolant for fuel cell stacks.
    Type: Application
    Filed: January 11, 2005
    Publication date: May 10, 2007
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Mikito Nishii, Hiroyuki Arai, Tsutomu Sakai, Mitsuru Kondo
  • Coolant composition
    Publication number: 20050274925
    Abstract: A coolant composition having anticorrosion properties against both aluminum and magnesium is provided. A coolant composition comprises a melting point depression agent selected from glycols and alcohols as the main component, and it contains a corrosion inhibitor selected from fluorides and a tribasic acid of an organic carboxylic acid or an alkali metal salt thereof.
    Type: Application
    Filed: May 17, 2005
    Publication date: December 15, 2005
    Inventors: Mikito Nishii, Hiroyuki Arai, Sadayoshi Suzuki, Hideyuki Tami, Shigehiko Sato