Patents by Inventor Hideki Ohtsubo

Hideki Ohtsubo 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).

  • Ceramic composite for light conversion, process for production thereof, and light-emitting devices provided with same
    Patent number: 8940187
    Abstract: Provided are a ceramic composite for light conversion, which is capable of maintaining a high radiant flux even when the proportion of Gd and Ce is increased to tune the fluorescence peak wavelength to the longer wavelength side, a process for producing the ceramic composite, and a light emitting device including the ceramic composite.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: January 27, 2015
    Assignee: UBE Industries, Ltd
    Inventors: Hideki Ohtsubo, Shin-Ichi Sakata, Shinichi Ishitobi, Yasuyuki Ichizono, Norifumi Miyamoto, Hisayoshi Iba
  • CERAMIC COMPOSITE FOR LIGHT CONVERSION, PROCESS FOR PRODUCTION THEREOF, AND LIGHT-EMITTING DEVICES PROVIDED WITH SAME
    Publication number: 20130088143
    Abstract: Provided are a ceramic composite for light conversion, which is capable of maintaining a high radiant flux even when the proportion of Gd and Ce is increased to tune the fluorescence peak wavelength to the longer wavelength side, a process for producing the ceramic composite, and a light emitting device including the ceramic composite.
    Type: Application
    Filed: March 14, 2011
    Publication date: April 11, 2013
    Applicant: Ube Industries, Ltd.
    Inventors: Hideki Ohtsubo, Shin-ichi Sakata, Shinichi Ishitobi, Yasuyuki Ichizono, Norifumi Miyamoto, Hisayoshi Iba
  • Ceramic composite material and porous ceramic material
    Patent number: 5981415
    Abstract: A ceramic composite material consisting of two or more crystal phases of different components, each crystal phase having a non-regular shape, said crystal phases having three dimensional continuous structures intertwined with each other, at least one crystal phase thereof being a single crystal. Further, by removing at least one crystal phase from this ceramic composite material, there is provided a porous ceramic material consisting of at least one crystal phase and pores, said crystal phase and pores having non-regular shapes and being three dimensionally continuous and intertwined with each other.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: November 9, 1999
    Assignee: UBE Industries, Ltd.
    Inventors: Yoshiharu Waku, Narihito Nakagawa, Kazutoshi Shimizu, Hideki Ohtsubo, Takumi Wakamoto, Yasuhiko Kohtoku
  • Fused ceramic composite
    Patent number: 5902763
    Abstract: A novel ceramic composite of a solidified body consisting of at least two crystal phases of oxides selected from metal oxides and complex metal oxides, except for the Al.sub.2 O.sub.3 /Y.sub.3 Al.sub.5 O.sub.12 combination.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: May 11, 1999
    Assignee: Ube Industries, Inc.
    Inventors: Yoshiharu Waku, Narihito Nakagawa, Hideki Ohtsubo, Takumi Wakamoto, Kazutoshi Shimizu, Yasuhiko Kohtoku
  • Ceramic composite material
    Patent number: 5569547
    Abstract: A ceramic composite material consisting of single crystal .alpha.-Al.sub.2 O.sub.3 and single crystal Y.sub.3 Al.sub.5 O.sub.12 is provided. This composite material has high mechanical strength and creep behavior particularly at high temperatures.
    Type: Grant
    Filed: October 4, 1994
    Date of Patent: October 29, 1996
    Assignee: Ube Industries, Ltd.
    Inventors: Yoshiharu Waku, Hideki Ohtsubo, Yasuhiko Kohtoku
  • Ceramic composite material
    Patent number: 5484752
    Abstract: A novel ceramic composite material consisting of single crystal .alpha.-Al.sub.2 O.sub.3 and polycrystal Y.sub.3 Al.sub.5 O.sub.12 and a ceramic composite material consisting of polycrystal .alpha.-Al.sub.2 O.sub.3 and polycrystal Y.sub.3 Al.sub.5 O.sub.12, each having a high mechanical strength and creep behavior particularly at high temperature are provided.
    Type: Grant
    Filed: November 8, 1994
    Date of Patent: January 16, 1996
    Assignee: Ube Industries, Ltd.
    Inventors: Yoshiharu Waku, Hideki Ohtsubo, Yasuhiko Kohtoku
  • Inorganic fiber sinter and process for producing same
    Patent number: 5318860
    Abstract: An inorganic fiber sinter consists essentially of (a) an inorganic substance (I) selected from the group consisting of (i) an amorphous substance consisting essentially of Si, M, C and O, (ii) an agglomerate consisting essentially of crystalline ultrafine particles of .beta.-SiC, MC, a solid solution of .beta.-SiC with MC and/or MC.sub.1-x, and amorphous SiO.sub.2 and MO.sub.2, and (iii) a mixture of the above amorphous substance (i) and the agglomerate (ii), and (b) an inorganic substance (II) selected from the group consisting of (iv) an amorphous substance consisting essentially of Si, M and O, (v) a crystal agglomerate consisting essentially of crystalline SiO.sub.2 and MO.sub.2, and (iv) a mixture of the amorphous substance (iv) and the crystal agglomerate (v), wherein M is Ti or Zr and x is a number of more than 0 to less than 1.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: June 7, 1994
    Assignee: UBE Industries, Ltd.
    Inventors: Takemi Yamamura, Masaki Shibuya, Hideki Ohtsubo, Tooru Hiratuka