Patents by Inventor Tetsuji Ito

Tetsuji Ito 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: 10422937
    Abstract: To provide a wavelength converting member in which the occurrence of blackening can be suppressed compared to the prior art; and a light emitting device, a light emitting element, a light source unit, and a display device using the wavelength converting member. The wavelength converting member includes: a receptacle including a light entrance plane and a light exit plane opposite to the light entrance plane and provided with a receiving space inside the light entrance plane and the light exit plane; and a wavelength conversion layer having quantum dots that is placed in the receiving space. The distance between the light entrance plane and the wavelength conversion layer is longer than the distance between the light exit plane and the wavelength conversion layer.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: September 24, 2019
    Assignee: NS MATERIALS INC.
    Inventors: Akiharu Miyanaga, Shingo Kokudo, Eiichi Kanaumi, Tetsuji Ito, Yoshikazu Nageno
  • Publication number: 20170315288
    Abstract: To provide a wavelength converting member in which the occurrence of blackening can be suppressed compared to the prior art; and a light emitting device, a light emitting element, a light source unit, and a display device using the wavelength converting member. The wavelength converting member includes: a receptacle including a light entrance plane and a light exit plane opposite to the light entrance plane and provided with a receiving space inside the light entrance plane and the light exit plane; and a wavelength conversion layer having quantum dots that is placed in the receiving space. The distance between the light entrance plane and the wavelength conversion layer is longer than the distance between the light exit plane and the wavelength conversion layer.
    Type: Application
    Filed: October 27, 2015
    Publication date: November 2, 2017
    Applicant: NS MATERIALS INC.
    Inventors: Akiharu MIYANAGA, Shingo KOKUDO, Eiichi KANAUMI, Tetsuji ITO, Yoshikazu NAGENO
  • Publication number: 20170269280
    Abstract: It is an object of the present invention to provide a wavelength conversion member capable of appropriately performing color conversion compared to the prior arts and a light-emitting apparatus, a light-emitting element, a light source apparatus, and a display apparatus using the wavelength conversion member. A wavelength conversion member of the present invention includes a light incident surface, a light emission surface and a side face that connects between the light incident surface and the light emission surface, and includes a container provided with a storage space inside the side face, a wavelength conversion substance that fills the inside of the storage space and a colored layer formed on the side face.
    Type: Application
    Filed: August 18, 2015
    Publication date: September 21, 2017
    Applicant: NS MATERIALS INC.
    Inventors: Shingo KOKUDO, Akiharu MIYANAGA, Eiichi KANAUMI, Tetsuji ITO, Yoshikazu NAGENO
  • Patent number: 7309945
    Abstract: The invention provides a laminate-type piezoelectric element comprising a ceramic laminate 10 with ceramic layers 11 and internal electrode layers 12 respectively stacked alternately, and a pair of external electrodes respectively connecting with a pair of connecting areas 15 formed at an outer peripheral area of the ceramic laminate 10. The internal electrode layer comprises an internal electrode part 120 with electric conductivity, and a non-pole part 120 where the internal electrode part 120 does not exist at the inside near an outer peripheral area. The ceramic laminate 10 comprises stress relaxation parts 13 able to modify more easily their shapes than the ceramic layers 11, along at least a part of said internal electrode layers. This stress relaxation part 13 is placed so as to overlap with the non-pole part 129 of either of the internal electrode layers 12, in a stacking direction of the ceramic laminate 10.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: December 18, 2007
    Assignee: Denso Corporation
    Inventors: Akio Iwase, Tetsuji Ito, Toshio Ooshima, Shige Kadotani
  • Publication number: 20050168106
    Abstract: The invention provides a laminate-type piezoelectric element comprising a ceramic laminate 10 with ceramic layers 11 and internal electrode layers 12 respectively stacked alternately, and a pair of external electrodes respectively connecting with a pair of connecting areas 15 formed at an outer peripheral area of the ceramic laminate 10. The internal electrode layer comprises an internal electrode part 120 with electric conductivity, and a non-pole part 120 where the internal electrode part 120 does not exist at the inside near an outer peripheral area. The ceramic laminate 10 comprises stress relaxation parts 13 able to modify more easily their shapes than the ceramic layers 11, along at least a part of said internal electrode layers. This stress relaxation part 13 is placed so as to overlap with the non-pole part 129 of either of the internal electrode layers 12, in a stacking direction of the ceramic laminate 10.
    Type: Application
    Filed: February 1, 2005
    Publication date: August 4, 2005
    Applicant: DENSO CORPORATION
    Inventors: Akio Iwase, Tetsuji Ito, Toshio Ooshima, Shige Kadotani
  • Publication number: 20030085494
    Abstract: A method for producing a ceramic laminate includes a sheet-forming process for forming a green sheet 11 by placing a raw ceramic material on a carrier film 12, a punching process for punching a green sheet piece of a predetermined shape from the green sheet, a stacking process for sequentially stacking a plurality of the green sheet pieces to form a green laminate, and a calcination process for calcining the green laminate to obtain a ceramic laminate consisting of a plurality of ceramic layers, wherein, in the punching process, the green sheet piece only is punched while the green sheet 11 is held on the carrier film 12.
    Type: Application
    Filed: October 31, 2002
    Publication date: May 8, 2003
    Inventors: Akio Iwase, Yukihisa Takeuchi, Shoji Osaki, Tetsuji Ito, Toshio Ooshima, Shige Kadotani
  • Patent number: 5198662
    Abstract: A measuring system measures temperature distribution in water using an optical fiber. An optical fiber cable suspended from a ship and towed by the ship to form an arch within the water. A measuring device for continuously measuring temperature at various points along the lengths of said optical fiber cable. Sensors are provided within the water to calculate the water depth at each of the various points along the length of the arch shaped optical fiber. Thus, a temperature distribution at each water depth can be continuously measured.
    Type: Grant
    Filed: August 9, 1991
    Date of Patent: March 30, 1993
    Assignees: Sumitomo Electric Industries, Ltd., Japan Marine Science and Technology Center
    Inventors: Masayoshi Yamaguchi, Tetsuji Ito, Taro Aoki, Mutsuo Hattori