Patents by Inventor Akihiro Nakai

Akihiro Nakai 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: 10106691
    Abstract: To be provided is a metal paste from which an electrode having high electrode activity as a sensor electrode of various gas sensors can be produced. The present invention is a metal paste for forming a gas sensor electrode obtained by dispersing a conductive particle including Pt or a Pt alloy and a ceramic powder including zirconia or stabilized zirconia, or any of zirconia and stabilized zirconia and one or more oxides of La, Ce, Pr, Nd, Sm, and Hf in a solvent, the metal paste further including an inorganic oxide particle containing alumina and an insoluble particle that is insoluble in the solvent, in which 0.5 or more to 3.0 mass % or less of the inorganic oxide particle and 1.0 to 5.0 mass % of the insoluble particle are dispersed based on the mass of the solid content of the conductive particle, the ceramic powder, the inorganic oxide particle, and the insoluble particle.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: October 23, 2018
    Assignee: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Nobuhisa Okamoto, Takuya Hosoi, Nobuyuki Akiyama, Akihiro Nakai, Shigekazu Onozumi
  • Publication number: 20170328860
    Abstract: To be provided is a metal paste from which an electrode having high electrode activity as a sensor electrode of various gas sensors can be produced. The present invention is a metal paste for forming a gas sensor electrode obtained by dispersing a conductive particle including Pt or a Pt alloy and a ceramic powder including zirconia or stabilized zirconia, or any of zirconia and stabilized zirconia and one or more oxides of La, Ce, Pr, Nd, Sm, and Hf in a solvent, the metal paste further including an inorganic oxide particle containing alumina and an insoluble particle that is insoluble in the solvent, in which 0.5 or more to 3.0 mass % or less of the inorganic oxide particle and 1.0 to 5.0 mass % of the insoluble particle are dispersed based on the mass of the solid content of the conductive particle, the ceramic powder, the inorganic oxide particle, and the insoluble particle.
    Type: Application
    Filed: July 27, 2017
    Publication date: November 16, 2017
    Inventors: Nobuhisa OKAMOTO, Takuya HOSOI, Nobuyuki AKIYAMA, Akihiro NAKAI, Shigekazu ONOZUMI
  • Patent number: 9758680
    Abstract: To be provided is a metal paste from which an electrode having high electrode activity as a sensor electrode of various gas sensors can be produced. The present invention is a metal paste for forming a gas sensor electrode obtained by dispersing a conductive particle including Pt or a Pt alloy and a ceramic powder including zirconia or stabilized zirconia, or any of zirconia and stabilized zirconia and one or more oxides of La, Ce, Pr, Nd, Sm, and Hf in a solvent, the metal paste further including an inorganic oxide particle containing alumina and an insoluble particle that is insoluble in the solvent, in which 0.5 or more to 3.0 mass % or less of the inorganic oxide particle and 1.0 to 5.0 mass % of the insoluble particle are dispersed based on the mass of the solid content of the conductive particle, the ceramic powder, the inorganic oxide particle, and the insoluble particle.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: September 12, 2017
    Assignee: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Nobuhisa Okamoto, Takuya Hosoi, Nobuyuki Akiyama, Akihiro Nakai, Shigekazu Onozumi
  • Publication number: 20150353742
    Abstract: To be provided is a metal paste from which an electrode having high electrode activity as a sensor electrode of various gas sensors can be produced. The present invention is a metal paste for forming a gas sensor electrode obtained by dispersing a conductive particle including Pt or a Pt alloy and a ceramic powder including zirconia or stabilized zirconia, or any of zirconia and stabilized zirconia and one or more oxides of La, Ce, Pr, Nd, Sm, and Hf in a solvent, the metal paste further including an inorganic oxide particle containing alumina and an insoluble particle that is insoluble in the solvent, in which 0.5 or more to 3.0 mass % or less of the inorganic oxide particle and 1.0 to 5.0 mass % of the insoluble particle are dispersed based on the mass of the solid content of the conductive particle, the ceramic powder, the inorganic oxide particle, and the insoluble particle.
    Type: Application
    Filed: January 27, 2014
    Publication date: December 10, 2015
    Inventors: Nobuhisa OKAMOTO, Takuya HOSOI, Nobuyuki AKIYAMA, Akihiro NAKAI, Shigekazu ONOZUMI
  • Patent number: 8043147
    Abstract: A vitreous system of the invention is provided for use particularly as windowpanes of a car or the like vehicle, and is always kept clean over its whole surface. A multi-layer vitreous body ‘A’ forming the system is composed of an outside glass plate (1), an inside glass plate (2) and a stratified air space (3) defined between the inside and outside plates. A number of jetting orifices (1a) are formed to penetrate the outside plate (1), and a compressor (5) is connected through a piping (4) to the air space (3) so as to charge it with a compressed air, so that this air is blown out through the orifices (1a).
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: October 25, 2011
    Assignee: Nakai Komuten Co., Ltd.
    Inventor: Akihiro Nakai
  • Publication number: 20080201888
    Abstract: A vitreous system of the invention is provided for use particularly as windowpanes of a car or the like vehicle, and is always kept clean over its whole surface. A multi-layer vitreous body ‘A’ forming the system is composed of an outside glass plate (1), an inside glass plate (2) and a stratified air space (3) defined between the inside and outside plates. A number of jetting orifices (1a) are formed to penetrate the outside plate (1), and a compressor (5) is connected through a piping (4) to the air space (3) so as to charge it with a compressed air, so that this air is blown out through the orifices (1a).
    Type: Application
    Filed: June 20, 2007
    Publication date: August 28, 2008
    Inventor: Akihiro Nakai