Patents by Inventor Yukihiro Niimi

Yukihiro Niimi 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).

  • Pressure sensor
    Patent number: 11940347
    Abstract: A pressure sensor has a stem in which a pressure introduction hole into which a pressure medium is introduced and a diaphragm deformable according to the pressure of the pressure medium are formed, and a strain detecting element which is arranged on the diaphragm via an insulating film and being configured to output a detection signal according to the deformation of the diaphragm. The strain detecting element is configured to have a portion made of polysilicon. A low doping layer having a higher electrical resistivity than polysilicon and a higher crystallinity than the insulating film is arranged between the insulating film and the strain detecting element.
    Type: Grant
    Filed: October 22, 2021
    Date of Patent: March 26, 2024
    Assignees: DENSO CORPORATION, NAGANO KEIKI CO., LTD.
    Inventors: Hiroshi Kodama, Naoki Yoshida, Kaori Miyashita, Eiji Takeda, Nobuaki Yamada, Yoshihiro Tomomatsu, Yasushi Yanagisawa, Yusuke Midorikawa, Shirou Kamanaru, Kenichi Yokoyama, Inao Toyoda, Hisayuki Takeuchi, Naohisa Niimi, Masao Takahashi, Yasutake Ura, Kouji Asano, Yukihiro Kamada
  • Fluidic flowmeter for use with disturbed fluids
    Patent number: 5218872
    Abstract: A fluidic flowmeter is located downstream of a valve. A wire gauze or net having small meshes is located on the upstream side of a nozzle forming the inlet to the fluidic element to stabilize flow.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: June 15, 1993
    Assignees: Tokyo Gas Company Limited, Aichi Tokei Denki Co., Ltd., Kimmon Manufacturing Co., Ltd.
    Inventors: Tatsuo Hattori, Takashi Ueki, Katsuhito Sakai, Toshiki Ishikawa, Yukihiro Niimi, Hideyuki Ochi
  • Fluidic flowmeter
    Patent number: 5157974
    Abstract: The flowrate of fluid to be measured, that flows into the nozzle of a fluidic oscillator is stabilized by fitting flow adjusting plates on the upstream side of the nozzle.
    Type: Grant
    Filed: June 24, 1991
    Date of Patent: October 27, 1992
    Assignee: Tokyo Gas Company, Limited
    Inventors: Tatsuo Hattori, Takashi Ueki, Katsuhito Sakai, Toshiki Ishikawa, Yukihiro Niimi