Patents by Inventor Kenji Omi

Kenji Omi 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: 10125417
    Abstract: The purpose of the present invention is to provide a sintered oxide to be used for a sputtering target, whereby little abnormal discharge occurs even during high-power film-deposition and no cracking occurs in the target. A sintered oxide having zinc, aluminum, titanium and oxygen, as constituent elements, characterized in that when the contents of zinc, aluminum and titanium are represented by Zn, Al, and Ti, respectively, the atomic ratios of the elements constituting the sintered oxide are Al/(Zn+Al+Ti)=0.035 to 0.050 and Ti/(Zn+Al+Ti)=0.05 to 0.20, and the average grain size of crystal grains having a Zn2TiO4 crystal phase as the matrix phase in the sintered oxide, is at most 5 ?m.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: November 13, 2018
    Assignee: TOSOH CORPORATION
    Inventors: Kenji Omi, Kenichi Itoh, Kentarou Utsumi
  • Publication number: 20170191153
    Abstract: The purpose of the present invention is to provide a sintered oxide to be used for a sputtering target, whereby little abnormal discharge occurs even during high-power film-deposition and no cracking occurs in the target. A sintered oxide having zinc, aluminum, titanium and oxygen, as constituent elements, characterized in that when the contents of zinc, aluminum and titanium are represented by Zn, Al, and Ti, respectively, the atomic ratios of the elements constituting the sintered oxide are Al/(Zn+Al+Ti)=0.035 to 0.050 and Ti/(Zn+Al+Ti)=0.05 to 0.20, and the average grain size of crystal grains having a Zn2TiO4 crystal phase as the matrix phase in the sintered oxide, is at most 5 ?m.
    Type: Application
    Filed: July 27, 2015
    Publication date: July 6, 2017
    Applicant: TOSOH CORPORATION
    Inventors: Kenji OMI, Kenichi ITOH, Kentarou UTSUMI
  • Patent number: 9396830
    Abstract: There is provided a zinc oxide sintered compact with a zirconium content of 10 to 1000 ppm, and a sputtering target containing the zinc oxide sintered compact. There is also provided a zinc oxide thin-film having a zirconium content of 10 to 2000 ppm and a resistivity of 10 ?·cm or greater.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: July 19, 2016
    Assignee: TOSOH CORPORATION
    Inventors: Masami Mesuda, Hideto Kuramochi, Hitoshi Iigusa, Kenji Omi, Tetsuo Shibutami
  • Patent number: 8569192
    Abstract: A sintered complex oxide comprising metal oxide particles (a) having a hexagonal lamellar structure and containing zinc oxide and indium, and metal oxide particles (b) having a spinel structure and containing a metal element M (where M is aluminum and/or gallium), wherein the mean value of the long diameter of the metal oxide particles (a) is no greater than 10 ?m, and at least 20% of the metal oxide particles (a) have an aspect ratio (long diameter/short diameter) of 2 or greater, based on the number of particles.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: October 29, 2013
    Assignee: Tosoh Corporation
    Inventors: Hideto Kuramochi, Kenji Omi, Masanori Ichida, Hitoshi Iigusa
  • Publication number: 20130214215
    Abstract: There is provided a zinc oxide sintered compact with a zirconium content of 10 to 1000 ppm, and a sputtering target containing the zinc oxide sintered compact. There is also provided a zinc oxide thin-film having a zirconium content of 10 to 2000 ppm and a resistivity of 10 ?·cm or greater.
    Type: Application
    Filed: November 25, 2011
    Publication date: August 22, 2013
    Applicant: TOSOH CORPORATION
    Inventors: Masami Mesuda, Hideto Kuramochi, Hitoshi Iigusa, Kenji Omi, Tetsuo Shibutami
  • Publication number: 20110155560
    Abstract: A sintered complex oxide comprising metal oxide particles (a) having a hexagonal lamellar structure and containing zinc oxide and indium, and metal oxide particles (b) having a spinel structure and containing a metal element M (where M is aluminum and/or gallium), wherein the mean value of the long diameter of the metal oxide particles (a) is no greater than 10 ?m, and at least 20% of the metal oxide particles (a) have an aspect ratio (long diameter/short diameter) of 2 or greater, based on the number of particles.
    Type: Application
    Filed: July 14, 2009
    Publication date: June 30, 2011
    Applicant: TOSOH CORPORATION
    Inventors: Hideto Kuramochi, Kenji Omi, Masanori Ichida, Hitoshi Iigusa
  • Patent number: 7083385
    Abstract: An axial flow fan motor having an impeller molded integrally with a shaft from a synthetic resin. The shaft is easily assembled with a bearing arrangement by being brought into tight contact with the inner ring of the bearing arrangement and is reliably fixed thereto in the elastic region of the shaft. A through hole is formed in the shaft along its central axis. After the shaft is fit into the inner ring of the bearing arrangement, a metal pin is pressed into the axial through hole. Because the pin is pressed in, the shaft is elastically expanded and brought into tight contact with the inner ring and fixed thereto in the elastic region of the shaft. Furthermore, the distal end portion of the shaft elastically outwardly expands and is pressed against the end surface of the inner ring, thereby preventing the bearing arrangement from coming off the shaft.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: August 1, 2006
    Assignee: Minebea Co., Ltd.
    Inventor: Kenji Omi
  • Publication number: 20050058544
    Abstract: An axial flow fan motor having an impeller molded integrally with a shaft from a synthetic resin. The shaft is easily assembled with a bearing arrangement by being brought into tight contact with the inner ring of the bearing arrangement and is reliably fixed thereto in the elastic region of the shaft. A through hole is formed in the shaft along its central axis. After the shaft is fit into the inner ring of the bearing arrangement, a metal pin is pressed into the axial through hole. Because the pin is pressed in, the shaft is elastically expanded and brought into tight contact with the inner ring and fixed thereto in the elastic region of the shaft. Furthermore, the distal end portion of the shaft elastically outwardly expands and is pressed against the end surface of the inner ring, thereby preventing the bearing arrangement from coming off the shaft.
    Type: Application
    Filed: July 26, 2004
    Publication date: March 17, 2005
    Inventor: Kenji Omi
  • Patent number: 6661141
    Abstract: In the blower 1 which fixes the impeller 17 on one end of the shaft 11, as bearing to support the shaft 11, in the resin-made bearing box 7b, two ball bearings 8, 9 the width of the inner races of which is smaller than the width of the outer races are inserted from one side of the box, and one inner race of the two ball bearings 8, 9 is pressurized toward the other ball bearing 9 with a spring 14. Two ball bearings 8, 9 are fixed at the position where the coaxiality becomes minimum. In addition, since the inner race is given with a pressurization by pushing of the spring 14, the position where the coaxiality becomes minimum can be kept.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: December 9, 2003
    Assignee: Minebea Co. Ltd.
    Inventor: Kenji Omi