Patents by Inventor Masahiro Sakai

Masahiro Sakai 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).

  • Publication number: 20140253275
    Abstract: According to an embodiment, there is an inductor, including: a magnetic core; a winding formed around the magnetic core; a first resin provided between turns of the winding; and a second resin covering the winding and the first resin, wherein the second resin has higher filler content than the first resin.
    Type: Application
    Filed: March 4, 2014
    Publication date: September 11, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tetsu Shijo, Tetsushi Okamoto, Masahiro Sakai, Satoshi Hiroshima, Shuichi Obayashi, Akiko Yamada
  • Patent number: 8803389
    Abstract: A stator includes a stator core formed from a plurality of split cores arranged in a circumferential direction, and a cylindrical body that surrounds the stator core from a periphery and secures the stator core. The split cores each have a first end portion on one end in the circumferential direction, and a second end portion on the other end in the circumferential direction. The first end portion has a protruding portion that protrudes outward in the circumferential direction, and the second end portion has a depressed portion that is depressed inward in the circumferential direction and fits together with the protruding portion of the first end portion of an adjacent split core.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: August 12, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tatsuhiko Mizutani, Masahiro Sakai
  • Patent number: 8795431
    Abstract: A gallium nitride layer is produced using a seed crystal substrate by flux method. The seed crystal substrate 8A includes a supporting body 1, a plurality of seed crystal layers 4A each comprising gallium nitride single crystal and separated from one another, a low temperature buffer layer 2 provided between the seed crystal layers 4A and the supporting body and made of a nitride of a group III metal element, and an exposed layer 3 exposed to spaces between the adjacent seed crystal layers 4A and made of aluminum nitride single crystal or aluminum gallium nitride single crystal. The gallium nitride layer is grown on the seed crystal layers by flux method.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: August 5, 2014
    Assignee: NGK Insulators, Ltd.
    Inventors: Katsuhiro Imai, Makota Iwai, Takanao Shimodaira, Masahiro Sakai, Shuhei Higashihara, Takayuki Hirao
  • Patent number: 8707273
    Abstract: There is provided a precondition generating apparatus in which a storage stores a set “S” of logical expressions; a creating unit creates a first logical expression being a logical product of the “S”, logical expressions of a program and a negation of a logical expression indicating a postcondition; a solver finds a solution that makes the first logical expression true and specifies a set of clauses that cannot be simultaneously true in the first logical expression if not found; wherein the creating unit sets relaxing variables for the logical expressions belonging to the set “S” in the set of clauses wherein the logical expressions indicates a precondition of the program, generates a second logical expression by alleviating the clauses of logical expressions corresponding to the relaxing variables in the first logical expression, and applies same process as in the first logical expression to the second logical expression.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: April 22, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takeo Imai, Masahiro Sakai
  • Publication number: 20140026809
    Abstract: A seed crystal substrate 10 includes a supporting body 1, and a seed crystal film 3A formed on the supporting body 1 and composed of a single crystal of a nitride of a Group 13 metal element. The seed crystal film 3A includes main body parts 3a and thin parts 3b having a thickness smaller than that of the main body parts 3a. The main body parts 3a and thin part 3b are exposed to a surface of the seed crystal substrate 10. A nitride 15 of a Group 13 metal element is grown on the seed crystal film 3A by flux method.
    Type: Application
    Filed: September 17, 2013
    Publication date: January 30, 2014
    Applicant: NGK INSULATORS, LTD.
    Inventors: Makoto Iwai, Takanao Shimodaira, Shuhei Higashihara, Takayuki Hirao, Masahiro Sakai, Katsuhiro Imai
  • Publication number: 20140014028
    Abstract: A gallium nitride layer is produced using a seed crystal substrate by flux method. The seed crystal substrate 8A includes a supporting body 1, a plurality of seed crystal layers 4A each comprising gallium nitride single crystal and separated from one another, a low temperature buffer layer 2 provided between the seed crystal layers 4A and the supporting body and made of a nitride of a group III metal element, and an exposed layer 3 exposed to spaces between the adjacent seed crystal layers 4A and made of aluminum nitride single crystal or aluminum gallium nitride single crystal. The gallium nitride layer is grown on the seed crystal layers by flux method.
    Type: Application
    Filed: September 20, 2013
    Publication date: January 16, 2014
    Applicant: NGK INSULATORS, LTD.
    Inventors: Katsuhiro Imai, Makoto Iwai, Takanao Shimodaira, Masahiro Sakai, Shuhei Higashihara, Takayuki Hirao
  • Patent number: 8584093
    Abstract: A device includes: a storage storing second logical expressions; an storage storing an essential condition which indicates a set of one or more second logical expressions selected such that a proposition is not satisfied that the post-condition is satisfied immediately after a program is executed when a logical product of other second logical expressions obtained by excluding the set indicated by the essential condition from the storage is satisfied; a generator generating a candidate condition represented by a logical product of one or more second logical expressions to include a common second logical expression with the set indicated by the essential condition; a judging unit judging whether satisfied is a proposition that the post-condition is satisfied immediately after the program is executed when the candidate condition is satisfied, and an output unit configured to output the candidate condition determined to satisfy the proposition as representing a pre-condition of the program.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: November 12, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiro Sakai, Takeo Imai
  • Publication number: 20130119381
    Abstract: The present invention provides a zinc oxide-based ultraviolet light emitting material showing intense emission in the ultraviolet region. The present invention is an ultraviolet light emitting material containing: zinc and oxygen as main components; at least one element selected from the group consisting of aluminum, gallium, and indium, as a first sub-component; and phosphorus as a second sub-component. This material has n-type conductivity.
    Type: Application
    Filed: November 24, 2011
    Publication date: May 16, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Osamu Inoue, Hiroshi Asano, Masahiro Sakai, Mikihiko Nishitani, Masumi Izuchi
  • Publication number: 20130106251
    Abstract: Disclosed is an instrument for allowing a temperature detecting element to adjoin the coil of a stator, which is part of a rotary electric machine, the instrument including an elastic member which is formed from an elastic material and presses the temperature detecting element to the coil, and a securing member for securing the elastic member to a body of the rotary electric machine to which the securing member is to be mounted.
    Type: Application
    Filed: March 24, 2010
    Publication date: May 2, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keiichi Kaneshige, Masahiro Sakai
  • Publication number: 20130020927
    Abstract: There is provided a PDP including a front substrate and a rear substrate. The front substrate and the rear substrate are disposed via discharge spaces. The discharge spaces are filled with a discharge gas. In the discharge spaces or in a space permeable to the discharge spaces, a copper-ion-exchanged zeolite adsorbent is disposed which is in an activated state.
    Type: Application
    Filed: May 13, 2011
    Publication date: January 24, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Yayoi Okui, Masahiro Sakai, Yusuke Fukui
  • Publication number: 20130015762
    Abstract: There is provided a PDP in which the structure of the periphery of a protective film is improved, excellent secondary electron emission property is exhibited, and improved efficiency and increased life can be expected. There is further provided a PDP in which occurrence of a discharge delay at the time of driving is prevented, and exhibition of high quality image display performance can be expected even in a high definition PDP that is driven at a high speed. Specifically, a crystalline film containing Sr in CeO2 in a concentration of 11.8 mol % to 49.4 mol % inclusive is formed on the surface of dielectric layer on the discharge space side as surface layer (protective film) having a thickness of about 1 ?m. High ? fine particles having secondary electron emission property higher than those of protective film are arranged thereon.
    Type: Application
    Filed: May 2, 2011
    Publication date: January 17, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Yusuke Fukui, Mikihiko Nishitani, Masahiro Sakai, Michiko Okafuji, Yayoi Okui, Yosuke Honda, Yasuhiro Yamauchi, Osamu Inoue, Hiroshi Asano
  • Patent number: 8317563
    Abstract: Provided is a manufacturing method that allows even a PDP having high-definition cells to exhibit excellent image display performance with reduced power consumption by effectively preventing impurities from adhering to the protective layer. Specifically, in a pre-baking step, a back substrate 9 is baked at a pre-baking temperature. Here, a highest pre-baking temperature is set to be lower than a softening point of a sealing material. The back substrate 9 is superposed on a front substrate 2. Then, a sealing step is performed in a sealing atmosphere prepared by mixing a predetermined amount of a reducing gas with a non-oxidizing gas. The above enables the impurities attributed to organic components due to a sealing material paste to remain as low molecular components, whereby the impurities are evacuated and removed in an evacuating step performed after the sealing step. This prevents adherence of the impurities to the protective layer 8.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: November 27, 2012
    Assignee: Panasonic Corporation
    Inventors: Yasuhiro Yamauchi, Masahiro Sakai, Yusuke Fukui, Keisuke Okada
  • Patent number: 8298362
    Abstract: The present invention aims to provide a manufacturing method for a PDP which allows even high-definition and ultra-high-definition PDPs to demonstrate an excellent image display capability at improved luminous efficiency, by suppressing variation of a discharge gas composition, and by eliminating an impurity gas in a discharge space effectively. To achieve the aim, deterioration of an absorbent material 39 composed of copper ion-exchanged ZSM-5-type zeolite is prevented, by performing both sealing and evacuation steps for the front substrate 2 and back substrate 9 in a non-oxidizing gas atmosphere. This maintains properties of the absorbent material 39 for absorbing the impurity gas without degradation, even if the absorbent material 39 absorbs a Xe gas in a discharge gas introducing step.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: October 30, 2012
    Assignee: Panasonic Corporation
    Inventors: Masahiro Sakai, Keisuke Okada, Yayoi Okui
  • Publication number: 20120266133
    Abstract: There is provided a precondition generating apparatus in which a storage stores a set “S” of logical expressions; a creating unit creates a first logical expression being a logical product of the “S”, logical expressions of a program and a negation of a logical expression indicating a postcondition; a solver finds a solution that makes the first logical expression true and specifies a set of clauses that cannot be simultaneously true in the first logical expression if not found; wherein the creating unit sets relaxing variables for the logical expressions belonging to the set “S” in the set of clauses wherein the logical expressions indicates a precondition of the program, generates a second logical expression by alleviating the clauses of logical expressions corresponding to the relaxing variables in the first logical expression, and applies same process as in the first logical expression to the second logical expression.
    Type: Application
    Filed: April 23, 2012
    Publication date: October 18, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takeo Imai, Masahiro Sakai
  • Patent number: 8236201
    Abstract: The present invention provides a phosphor having high luminance, a property of low luminance degradation during driving of a light-emitting device and manufacturing processes, and chromaticity y in PDP comparable to that of BAM:Eu. The present invention is the phosphor represented by the general formula xSrO.yEuO.MgO.zSiO2 where 2.970?x?3.500, 0.001 ?y?0.030, and 1.900?z?2.100 are satisfied, wherein a main peak is present in the range of diffraction angle 2?=16.1 to 16.5 degree in the X-ray diffraction pattern obtained by measurement on the blue phosphor using an X-ray with a wavelength of 0.774 ?, and at least one condition of the following conditions (A1) and (A2) is satisfied: (A1) at least two peaks whose tops are located in the range of diffraction angle 2?=15.3 to 16.1 degree are present; and (A2) at least two peaks whose tops are located in the range of diffraction angle 2?=22.2 to 23.3 degree are present.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: August 7, 2012
    Assignee: Panasonic Corporation
    Inventors: Yayoi Kitamura, Seigo Shiraishi, Kojiro Okuyama, Masahiro Sakai
  • Patent number: 8164259
    Abstract: A first aim of the present invention is to provide a PDP capable of stably delivering favorable image display performance and being driven with low power, by improving the surface layer to improve secondary electron emission characteristics and charge retention characteristics. A second aim of the present invention is to provide a PDP, in addition to having the above-mentioned effects, capable of reducing an aging time. In order to achieve these aims, a crystalline film of a film thickness of approximately 1 ?m is disposed as a surface layer (protective film) 8 on a surface of the dielectric layer 7 that faces a discharge space. The surface layer 8 is made by adding Sr to CeO2, and a concentration of Sr in the surface layer 8 is in a range of 11.8 mol % to 49.4 mol % inclusive. With this structure, an attempt is made to improve the secondary electron emission characteristics and aging characteristics in the surface layer 8.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: April 24, 2012
    Assignee: Panasonic Corporation
    Inventors: Yusuke Fukui, Masahiro Sakai, Mikihiko Nishitani, Yosuke Honda, Michiko Okafuji, Yasuhiro Yamauchi
  • Patent number: 8160521
    Abstract: Signals are received with a wider power range even through the use of existing AGCs than by conventional mobile communication terminals. In an AGC on one antenna side, in order to enable reception of a signal at a higher level, a target TA of a dynamic range DA of this AGC is changed to a value 5 dB higher than a value defined as a standard TS. On the other hand, in an AGC on another antenna side, in order to enable reception of a signal at a lower level, a target TB of a dynamic range DB of this AGC is changed to a value 5 dB lower than the value defined as the standard TS.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: April 17, 2012
    Assignee: NTT DoCoMo, Inc.
    Inventors: Yousuke Iizuka, Shinsuke Ogawa, Masahiro Sakai
  • Patent number: 8142684
    Abstract: The present invention provides a method of manufacturing a blue silicate phosphor having high luminance and a chromaticity y comparable to or lower than that of BAM:Eu. The present invention is a method of manufacturing a blue silicate phosphor represented by the general formula aAO.bEuO.(Mg1?w,Znw)O.cSiO2.dCaCl2, where A is at least one selected from Sr, Ba and Ca, and 2.970?a?3.500, 0.006?b?0.030, 1.900?c?2.100, 0?d?0.05, and 0?w?1 are satisfied. In this manufacturing method, heat treatment is carried out in a gas atmosphere having an oxygen partial pressure of 1×10?15.5 atm to 1×10?10 atm at a temperature of 1200° C. to 1400° C.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: March 27, 2012
    Assignee: Panasonic Corporation
    Inventors: Seigo Shiraishi, Kojiro Okuyama, Masahiro Sakai, Takehiro Zukawa
  • Patent number: 8129905
    Abstract: The present invention provides a phosphor having high luminance, a property of low luminance degradation during driving of a light-emitting device, and chromaticity y comparable to that of BAM:Eu. The present invention is a phosphor represented by the general formula aAO.bEuO.DO.cSiO2, where A is at least one selected from Ca, Sr and Ba, D is at least one selected from Mg and Zn, and 2.970?a?3.500, 0.001?b?0.030, and 1.900?c?2.100 are satisfied. In this phosphor, a peak intensity at 1490 cm?1 is 0.02 to 0.8 when a peak intensity at 565 cm?1 is set to 1 in a spectrum obtained by measurement using photoacoustic spectroscopy.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: March 6, 2012
    Assignee: Panasonic Corporation
    Inventors: Kojiro Okuyama, Masahiro Sakai, Seigo Shiraishi
  • Publication number: 20110298363
    Abstract: A first aim of the present invention is to provide a PDP capable of stably delivering favorable image display performance and being driven with low power, by improving the surface layer to improve secondary electron emission characteristics and charge retention characteristics. A second aim of the present invention is to provide a PDP, in addition to having the above-mentioned effects, capable of reducing an aging time. In order to achieve these aims, a crystalline film of a film thickness of approximately 1 ?m is disposed as a surface layer (protective film) 8 on a surface of the dielectric layer 7 that faces a discharge space. The surface layer 8 is made by adding Sr to CeO2, and a concentration of Sr in the surface layer 8 is in a range of 11.8 mol % to 49.4 mol % inclusive. With this structure, an attempt is made to improve the secondary electron emission characteristics and aging characteristics in the surface layer 8.
    Type: Application
    Filed: January 13, 2010
    Publication date: December 8, 2011
    Applicant: PANASONIC CORPORATION
    Inventors: Yusuke Fukui, Masahiro Sakai, Mikihiko Nishitani, Yosuke Honda, Michiko Okafuji, Yasuhiro Yamauchi