Patents by Inventor Yoshitaka Sato

Yoshitaka Sato 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: 6905635
    Abstract: This invention presents a gallium nitride phosphor with superior light emitting characteristics, its method of manufacture, and a display device which uses the phosphor. By heat treatment or microwave irradiation of gallium nitride phosphor powder in an ambient containing essentially no H2 or H2O, a phosphor is produced wherein the amount of H2 and H2O gas evolved when heated in a vacuum is less than or equal to 0.2 cm3/g of phosphor and 2.0 cm3/g of phosphor respectively.
    Type: Grant
    Filed: April 7, 2003
    Date of Patent: June 14, 2005
    Assignees: Nichia Corporation, Futaba Corporation
    Inventors: Hiroto Tamaki, Masatoshi Kameshima, Yoshitaka Sato
  • Publication number: 20040255485
    Abstract: An etching processing apparatus 1 has a transfer chamber 2, a plurality of processing chambers 3 and 4, and a plurality of cassette chambers 7 and 8. Inside the transfer chamber 2, a transfer mechanism 14 is provided. A control device 17 pauses the operation of the vacuum pump 16 after closing an opening/closing valve 15 of a vacuum evacuating mechanism, which vacuum evacuates the transfer chamber 2 in which the transfer mechanism 14 is provided, when the operation of the transfer mechanism 14 is paused for a predetermined time or longer. Accordingly, conservation of energy becomes possible without causing decrease of productivity.
    Type: Application
    Filed: April 12, 2004
    Publication date: December 23, 2004
    Applicants: TOKYO ELECTRON LIMITED, KABUSHIKI KAISHA TOSHIBA
    Inventors: Toshihiko Kitoku, Shinji Niwa, Toshiki Hosaka, Takashi Kitazawa, Atsuo Sanda, Yoshitaka Sato
  • Patent number: 6781500
    Abstract: In a stick coil, there is disclosed an ignition coil for an internal combustion engine which can prevent a crack (a collar leak) from being generated due to a thermal stress. In this ignition coil, the structure is made such that a size (L) of a portion which is in parallel to an axial direction of a primary spool (121) in a projection portion (121b) is larger than a size (T) of a portion which is in parallel to an orthogonal direction to the axial direction of the primary spool (121). Accordingly, a frontal projected area of the projection portion (121b) as seen from a flowing direction of a resin becomes small, a resin flow is hard to get out of order at a time when the resin flows through a portion corresponding to the projection portion (121b) at the forming time, and a convoluted void and a weld are hard to be generated.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: August 24, 2004
    Assignee: Denso Corporation
    Inventors: Kazuhide Kawai, Masafuyu Sano, Shigeya Abe, Masahiro Inagaki, Hajime Kasai, Hidetoshi Nakashima, Jyunichi Wada, Koji Tsunenaga, Kazutoyo Osuka, Masahiko Aoyama, Takashi Tauchi, Kaneo Buma, Yoshitaka Sato, Katsunori Akimoto
  • Patent number: 6780346
    Abstract: A gallium nitride phosphor of which the particles are coated with a surface-treating compound that contains at least one of P and Sb.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: August 24, 2004
    Assignees: Nichia Corporation, Futaba Corporation
    Inventors: Hiroto Tamaki, Masatoshi Kameshima, Yoshitaka Sato
  • Patent number: 6653922
    Abstract: An ignition coil includes a housing which contains a central core portion, an inner spool having a first winding, and an outer spool having a second winding. The inner spool extends outward of the central core portion. The outer spool extends outward of the inner spool. A locating member includes a locating rib adjacent to an upper portion of the central core portion. The locating rib is in a gap between the inner spool and the central core portion, and locates the inner spool and the central core portion relative to each other. Insulating resin injected into the housing provides insulation among parts in the housing. At least one of the inner spool and the locating member has a void-escape passage which connects the gap and an outside of the inner spool with each other, and which allows a void to escape from the injected insulating resin in the gap.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: November 25, 2003
    Assignee: Denso Corporation
    Inventors: Masafuyu Sano, Kazutoyo Osuka, Norihiro Adachi, Yoshihiro Shimoide, Osamu Sugie, Kaneo Buma, Katsunori Akimoto, Atsuyuki Konishi, Masaharu Shimohata, Yoshitaka Sato
  • Publication number: 20030191919
    Abstract: A volume control system in a storage area network environment, which is capable of executing volume operation requests in multiple stages, and is also capable of canceling an erroneous volume operation even after the operation has been executed by the user. A volume operation request for executing run commands from the user is analyzed, and parameters for executing the volume operation request are created by a program that operates the storage apparatus. Each of the parameters is provided with an attribute indicating as to whether cancellation is possible or as to when the execution is to be performed. If cancellation of the run command is possible, a parameter for canceling the run command is created simultaneously. The run commands may be executed on the basis of the parameters after verifying by a simulation as to whether or not the various parameters created are correct. At this point, the user may select whether to execute the run commands promptly or in stages.
    Type: Application
    Filed: November 21, 2002
    Publication date: October 9, 2003
    Applicant: HITACHI, LTD.
    Inventors: Yoshitaka Sato, Hiroshi Nojima, Nobuyuki Yamashita, Tatsundo Aoshima
  • Publication number: 20030190806
    Abstract: This invention presents a gallium nitride phosphor with superior light emitting characteristics, its method of manufacture, and a display device which uses the phosphor. By heat treatment or microwave irradiation of gallium nitride phosphor powder in an ambient containing essentially no H2 or H2O, a phosphor is produced wherein the amount of H2 and H2O gas evolved when heated in a vacuum is less than or equal to 0.2 cm3/g of phosphor and 2.0 cm3/g of phosphor respectively.
    Type: Application
    Filed: April 7, 2003
    Publication date: October 9, 2003
    Inventors: Hiroto Tamaki, Masatoshi Kameshima, Yoshitaka Sato
  • Patent number: 6605014
    Abstract: Toothed belt comprises teeth and bottoms which are alternately formed at one surface of the toothed rubber layer of the toothed belt. A fabric is provided at the outer surface of the teeth and the bottoms. A back rubber layer is integrally provided at the other surface of the toothed rubber layer. A plurality of cords are interposed at the interface between the toothed rubber layer and the back rubber layer. A large number of modified microfibers are intermixed throughout the toothed rubber layer. The modified microfibers consist of a copolymer of polyolefin and nylon fiber. The modified microfibers are oriented in the length direction of the toothed belt as a whole.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: August 12, 2003
    Assignee: Unitta Company
    Inventors: Shigehiro Isshiki, Tsutomu Tokunaga, Yoshitaka Sato
  • Publication number: 20030076208
    Abstract: An ignition coil includes a housing which contains a central core portion, an inner spool having a first winding, and an outer spool having a second winding. The inner spool extends outward of the central core portion. The outer spool extends outward of the inner spool. A locating member includes a locating rib adjacent to an upper portion of the central core portion. The locating rib is in a gap between the inner spool and the central core portion, and locates the inner spool and the central core portion relative to each other. Insulating resin injected into the housing provides insulation among parts in the housing. At least one of the inner spool and the locating member has a void-escape passage which connects the gap and an outside of the inner spool with each other, and which allows a void to escape from the injected insulating resin in the gap.
    Type: Application
    Filed: June 27, 2002
    Publication date: April 24, 2003
    Inventors: Masafuyu Sano, Kazutoyo Osuka, Norihiro Adachi, Yoshihiro Shimoide, Osamu Sugie, Kaneo Buma, Katsunori Akimoto, Atsuyuki Konishi, Masaharu Shimohata, Yoshitaka Sato
  • Patent number: 6531072
    Abstract: A phosphor in the form of a columnar powder capable of exhibiting enhanced luminous efficiency, providing various luminous colors by electron excitation depending on the selection of elements added thereto and having improved life characteristics. The phosphor is made by heating a starting material constituted by a GaN based phosphor material to a temperature equal to or greater than a sublimation temperature thereof. The phosphor thus obtained is represented by Ga1−xInxN:A,B, wherein x is larger than or equal to 0 and smaller than 1 (0≦x<1), A is Zn or Mg, and B is Si or Ge.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: March 11, 2003
    Assignee: Futaba Corporation
    Inventors: Yoriko Suda, Kenichi Honda, Yoshitaka Sato, Hitoshi Toki
  • Publication number: 20030034481
    Abstract: A gallium nitride phosphor of which the particles are coated with a surface-treating compound that contains at least one of P and Sb.
    Type: Application
    Filed: April 12, 2002
    Publication date: February 20, 2003
    Inventors: Hiroto Tamaki, Masatoshi Kameshima, Yoshitaka Sato
  • Patent number: 6517740
    Abstract: The present invention provides a phosphor of formula A2SiO5:B (A is Y or Gd, and B is Ce or Tb) which is characterized by a surface elemental composition represented by (A+B)/Si ranging from 1.5 to 2.5, wherein A is Y or Gd, and B is Ce or Tb; and method for preparing said phosphor. One embodiment of the method is as follows: a SiO2 powder is mixed with co-precipitate (Y, Ce)2O3 (Ce/Y=0.01), in an amount ranging from 10 to 110 mol % based on the amount of (Y, Ce)2O3, and the mixture is charged into the inner crucible of a double-walled aluminum crucible. After graphite is charged between the inner and outer crucible, the mixture is calcined at 1450° C. for 2 hours to obtain an Y2SiO5:Ce phosphor. The luminous efficiency of a field emission display (FED) prepared employing the Y2SiO5:Ce phosphor was measured at an anode voltage of 600V, an electric power input of 30 Wp-p and a duty rate of 1/240.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: February 11, 2003
    Assignee: Futaba Denshi Kogyo Kabushiki Kaisha
    Inventors: Fumiaki Kataoka, Kiyoshi Tamura, Yoshitaka Sato, Yuji Nomura
  • Publication number: 20020175796
    Abstract: In a stick coil, there is disclosed an ignition coil for an internal combustion engine which can prevent a crack (a collar leak) from being generated due to a thermal stress. In this ignition coil, the structure is made such that a size (L) of a portion which is in parallel to an axial direction of a primary spool (121) in a projection portion (121b) is larger than a size (T) of a portion which is in parallel to an orthogonal direction to the axial direction of the primary spool (121). Accordingly, a frontal projected area of the projection portion (121b) as seen from a flowing direction of a resin becomes small, a resin flow is hard to get out of order at a time when the resin flows through a portion corresponding to the projection portion (121b) at the forming time, and a convoluted void and a weld are hard to be generated.
    Type: Application
    Filed: May 7, 2002
    Publication date: November 28, 2002
    Inventors: Kazuhide Kawai, Masafuyu Sano, Shigeya Abe, Masahiro Inagaki, Hajime Kasai, Hidetoshi Nakashima, Jyunichi Wada, Koji Tsunenaga, Kazutoyo Osuka, Masahiko Aoyama, Takashi Tauchi, Kaneo Buma, Yoshitaka Sato, Katsunori Akimoto
  • Patent number: 6406397
    Abstract: A toothed belt includes a toothed rubber layer having teeth formed on a surface thereof and containing a plurality of short fibers entirely distributed therein. The surface of the toothed rubber layer, on which the teeth are formed, is covered with a cover fabric. A back rubber layer is integrally applied to the other surface of the toothed rubber layer. A plurality of cord elements is disposed across a width of the belt and is intervened between the toothed rubber layer and the back layer in such a manner that a portion of each cord element is embedded in the toothed rubber layer, and the remaining portion thereof is embedded in the back rubber layer. The short fibers are entirely distributed in the toothed rubber layer and are regularly oriented.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: June 18, 2002
    Assignee: Unitta Company
    Inventors: Shigehiro Isshiki, Tsutomu Tokunaga, Yoshitaka Sato
  • Publication number: 20010051555
    Abstract: Toothed belt comprises teeth and bottoms which are alternately formed at one surface of the toothed rubber layer of the toothed belt. A fabric is provided at the outer surface of the teeth and the bottoms. A back rubber layer is integrally provided at the other surface of the toothed rubber layer. A plurality of cords are interposed at the interface between the toothed rubber layer and the back rubber layer. A large number of modified microfibers are intermixed throughout the toothed rubber layer. The modified microfibers consist of a copolymer of polyolefin and nylon fiber. The modified microfibers are oriented in the length direction of the toothed belt as a whole.
    Type: Application
    Filed: May 14, 2001
    Publication date: December 13, 2001
    Applicant: UNITTA COMPANY
    Inventors: Shigehiro Isshiki, Tsutomu Tokunaga, Yoshitaka Sato
  • Patent number: 6303403
    Abstract: A method for preparing a gallium nitride phosphor which is capable of emitting light at luminance increased to a degree sufficient to permit the phosphor to be practically used. A dopant compound containing elements reacted with H2 and gasified by heating is arranged on an upstream side in a calcination oven in which NH3 is flowed and a matrix element compound is arranged on the downstream side therein, resulting in calcination of the compound being carried out. This permits GaN to be surrounded with ammonia and the dopant during the calcination, so that the GaN phosphor may be fully doped with the dopant.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: October 16, 2001
    Assignee: Futaba Denshi Kogyo, K.K.
    Inventors: Yoshitaka Sato, Yoriko Suda, Fumiaki Kataoka, Hitoshi Toki, Yuji Nomura
  • Publication number: 20010023936
    Abstract: The present invention provides a phosphor of formula A2SiO5:B (A is Y or Gd, and B is Ce or Tb) which is characterized by a surface elemental composition represented by (A+B)/Si ranging from 1.5 to 2.5, wherein A is Y or Gd, and B is Ce or Tb; and method for preparing said phosphor. One embodiment of the method is as follows: a SiO2 powder is mixed with co-precipitate (Y, Ce)2O3 (Ce/Y=0.01), in an amount ranging from 10 to 110 mol % based on the amount of (Y, Ce)2O3, and the mixture is charged into the inner crucible of a double-walled aluminum crucible. After graphite is charged between the inner and outer crucible, the mixture is calcined at 1450° C. for 2 hours to obtain an Y2SiO5:Ce phosphor. The luminous efficiency of a field emission display (FED) prepared employing the Y2SiO5:Ce phosphor was measured at an anode voltage of 600V, an electric power input of 30 Wp-p and a duty rate of 1/240.
    Type: Application
    Filed: March 26, 2001
    Publication date: September 27, 2001
    Applicant: Futaba Denshi Kogyo Kabushiki Kaisha
    Inventors: Fumiaki Kataoka, Kiyoshi Tamura, Yoshitaka Sato, Yuji Nomura
  • Patent number: D452598
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: December 25, 2001
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventor: Yoshitaka Sato
  • Patent number: D464784
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: October 22, 2002
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventor: Yoshitaka Sato
  • Patent number: D473362
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: April 15, 2003
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventor: Yoshitaka Sato