Patents by Inventor Takeshi Igarashi

Takeshi Igarashi 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: 6982441
    Abstract: A semiconductor device includes a compound semiconductor substrate having a resistivity less than 1.0×108 Ohm-cm at least at one surface thereof, a buffer layer formed on the compound semiconductor substrate and having a super lattice structure, and an active layer formed on the buffer layer and having an active element formed therein.
    Type: Grant
    Filed: January 4, 2002
    Date of Patent: January 3, 2006
    Assignee: Fujitsu Quantum Devices Limited
    Inventors: Fumikazu Yamaki, Takeshi Igarashi
  • Patent number: 6982933
    Abstract: A recording and/or reproducing apparatus for recording and/or reproducing signals on and/or from a recording medium includes a recording and/or reproducing portion for recording and/or reproducing signals on and/or from the recording medium, a carrying portion for carrying the recording medium, and first and second sliders. The first slider is movable in one direction for moving the carrying portion together with the recording medium up to a specific withdrawal position. The second slider is movable in a direction being substantially the same as the one direction for moving the recording medium carried by the carrying portion to a recording and/or reproducing position corresponding to a position of the recording and/or reproducing portion. The first slider and the second slider are overlapped to each other in the vertical direction.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: January 3, 2006
    Assignee: Sony Corporation
    Inventors: Takeshi Igarashi, Yutaka Fukuyama, Takashi Suezaki
  • Patent number: 6966179
    Abstract: To provide an exhaust gas purifying system capable of forcibly regenerating DPF by efficiently raising the temperature of exhaust gas even when an exhaust gas temperature is very low at the time of low load and low engine speed such as an idling operation. In an exhaust purifying system (1) having an exhaust throttling valve (31) and a DPF (3) in an exhaust passage and having regeneration control means (P1) for regenerating the DPF (3), the regeneration control means (P1) is provided with an exhaust gas temperature detection means (P22), a fuel injection control means (P11), and an exhaust throttling control means (P12) and includes regeneration control for performing the exhaust gas temperature raising control through the multistage delay injection by the fuel injection control means (P11) and through the exhaust throttling of the exhaust throttling valve (31).
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: November 22, 2005
    Assignee: Isuzu Motors Limited
    Inventors: Takao Onodera, Hidetaka Shibata, Takashi Haseyama, Takeshi Igarashi, Takuro Iwashita, Masashi Gabe, Yoshihisa Tashiro
  • Publication number: 20050174683
    Abstract: A recording and/or reproducing apparatus for recording and/or reproducing signals on and/or from a recording medium includes a recording and/or reproducing portion for recording and/or reproducing signals on and/or from the recording medium, a carrying portion for carrying the recording medium, and first and second sliders. The first slider is movable in one direction for moving the carrying portion together with the recording medium up to a specific withdrawal position. The second slider is movable in a direction being substantially the same as the one direction for moving the recording medium carried by the carrying portion to a recording and/or reproducing position corresponding to a position of the recording and/or reproducing portion. The first slider and the second slider are overlapped to each other in the vertical direction.
    Type: Application
    Filed: April 1, 2005
    Publication date: August 11, 2005
    Inventors: Takeshi Igarashi, Yutaka Fukuyama, Takashi Suezaki
  • Publication number: 20050172307
    Abstract: A recording and/or reproducing apparatus for recording and/or reproducing signals on and/or from a recording medium includes a recording and/or reproducing portion for recording and/or reproducing signals on and/or from the recording medium, a carrying portion for carrying the recording medium, and first and second sliders. The first slider is movable in one direction for moving the carrying portion together with the recording medium up to a specific withdrawal position. The second slider is movable in a direction being substantially the same as the one direction for moving the recording medium carried by the carrying portion to a recording and/or reproducing position corresponding to a position of the recording and/or reproducing portion. The first slider and the second slider are overlapped to each other in the vertical direction.
    Type: Application
    Filed: April 1, 2005
    Publication date: August 4, 2005
    Inventors: Takeshi Igarashi, Yutaka Eukuyama, Takashi Suezaki
  • Patent number: 6901035
    Abstract: A recording/reproducing apparatus includes a record medium cartridge holder having a main support portion with a cartridge carrying portion slidably arranged on it for withdrawing a cartridge held at a standby position to a withdrawal position. An insertion restricting portion prohibits passage of a cartridge in an improper orientation. A lock portion, arranged directly above the insertion restricting portion, locks the carrying portion in the standby position and releases the locking of the carrying portion when the cartridge passes through the insertion restricting portion.
    Type: Grant
    Filed: May 12, 2003
    Date of Patent: May 31, 2005
    Assignee: Sony Corporation
    Inventor: Takeshi Igarashi
  • Patent number: 6865077
    Abstract: A personal computer provided with heat-generating parts such as a CPU, a cooling unit that releases the heat generated by the heat-generating part to the outside of the personal computer has a container structure so that the cooling liquid in the interior does not leak to the outside. Also, part of the container structure is provided with a heat connection part for receiving the heat transferred from the outside of the cooling unit. Furthermore, there is provided means of heat transfer for transferring the heat generated by the heat-generating part to the cooling unit, one end of this means of heat transfer being thermally connected to the heat connection part of the cooling unit and the other end thereof being thermally connected to the heat-generating part. This prevents troubles in the personal computer due to the moisture permeation of the cooling liquid of cooling unit and leakage of the cooling liquid. Also, disassembly and assembly is made easy by forming the cooling unit as a separate structure.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: March 8, 2005
    Assignee: Hitachi, Ltd.
    Inventor: Takeshi Igarashi
  • Publication number: 20050044845
    Abstract: To provide an exhaust gas purifying system capable of forcibly regenerating DPF by efficiently raising the temperature of exhaust gas even when an exhaust gas temperature is very low at the time of low load and low engine speed such as an idling operation. In an exhaust purifying system (1) having an exhaust throttling valve (31) and a DPF (3) in an exhaust passage and having regeneration control means (P1) for regenerating the DPF (3), the regeneration control means (P1) is provided with an exhaust gas temperature detection means (P22), a fuel injection control means (P11), and an exhaust throttling control means (P12) and includes regeneration control for performing the exhaust gas temperature raising control through the multistage delay injection by the fuel injection control means (P11) and through the exhaust throttling of the exhaust throttling valve (31).
    Type: Application
    Filed: August 30, 2004
    Publication date: March 3, 2005
    Applicant: ISUZU MOTORS LIMITED
    Inventors: Takao Onodera, Hidetaka Shibata, Takashi Haseyama, Takeshi Igarashi, Takuro Iwashita, Masashi Gabe, Yoshihisa Tashiro
  • Publication number: 20040247934
    Abstract: A polymer light emitting material, wherein the material has a light emitting mechanism based on transition from an excited triplet state to a ground state or transition through an excited triplet state to a ground state of an electron energy level, and the material comprises a nonionic light emitting part which constitutes a part of the polymer or is bound to the polymer. The polymer light emitting material exhibits high light emission efficiency above 5%, which is the limit of external quantum efficiency of fluorescence and can be designed so as to have a large area and hence are suitable for mass production of organic light emitting devices.
    Type: Application
    Filed: December 19, 2003
    Publication date: December 9, 2004
    Inventors: Masataka Takeuchi, Shuichi Naijo, Naoko Ito, Koro Shirane, Takeshi Igarashi, Yshiaki Takahashi, Motoaki Kamachi
  • Publication number: 20040181312
    Abstract: There are provided a load sensor that cannot be broken even when applied with a large load, has a simple structure easily designed to be lightweight and compact and can detect a load with a high accuracy, and a legged robot apparatus including the load sensor in each of legs thereof. The robot apparatus includes the load sensors counting more than one and each of which detects, as an external force, a reaction applied when the leg abuts a ground surface. The load sensor (10) includes a diaphragm (11) having a pressure-sensitive portion (11a), an activating member (14) that is applied with an external force, a driving member (17) forming along with the activating member (14) a double structure and which presses the pressure-sensitive portion (11a), and an elastic member (15) that is displaced generally proportionally to the magnitude of an external force applied to the activating member (14) to convey the external force to the driving member (17).
    Type: Application
    Filed: March 10, 2004
    Publication date: September 16, 2004
    Inventors: Akito Miura, Ryoichi Maeda, Susumu Tosaka, Takeshi Igarashi, Goushi Koike
  • Patent number: 6777372
    Abstract: A method for producing a hydrocyanic acid synthesis catalyst is disclosed which comprises sequential exposure of an iron surface, such as, for example, pig iron, to sequential oxidative and reductive atmospheres, preferably using repetitive cycles, the oxidative atmosphere preferably containing 5% to 3% by volume oxygen and the reductive atmosphere preferably containing 1% to 99% hydrogen.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: August 17, 2004
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Takeshi Igarashi, Susumu Naito, Tohru Nakamura
  • Patent number: 6706168
    Abstract: Wastewater treatment operations, i.e. the coagulation, decomposition, sterilization and separation of impurities such as the sludge, organisms, etc. in a liquid to be treated are carried out by applying an AC voltage of a specific frequency between first and second electrodes provided in the liquid to be treated, and thereby making an AC field work on the same liquid. An AC voltage of a high frequency suited to the quality of the water in a frequency band in which metal ions, hydrogen, and oxygen are dissolved into and are taken take out in large quantities, occurring in the AC electrolysis of the object liquid elute, and an AC voltage of a low frequency are switched from one to the other in a contactless manner in a predetermined cycle, and the resultant voltage is applied to the first and second electrodes. This causes crystals and bubbles in the water, and sludge, organisms, etc.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: March 16, 2004
    Inventor: Takeshi Igarashi
  • Publication number: 20030223343
    Abstract: A recording and/or reproducing apparatus for recording and/or reproducing signals on and/or from a recording medium includes a recording and/or reproducing portion for recording and/or reproducing signals on and/or from the recording medium, a carrying portion for carrying the recording medium, and first and second sliders. The first slider is movable in one direction for moving the carrying portion together with the recording medium up to a specific withdrawal position. The second slider is movable in a direction being substantially the same as the one direction for moving the recording medium carried by the carrying portion to a recording and/or reproducing position corresponding to a position of the recording and/or reproducing portion. The first slider and the second slider are overlapped to each other in the vertical direction.
    Type: Application
    Filed: May 12, 2003
    Publication date: December 4, 2003
    Applicant: Sony Corporation
    Inventor: Takeshi Igarashi
  • Patent number: 6657925
    Abstract: A recording and/or reproducing apparatus for recording and/or reproducing signals on and/or from a recording medium includes a recording and/or reproducing portion for recording and/or reproducing signals on and/or from the recording medium, a carrying portion for carrying the recording medium, and first and second sliders. The first slider is movable in one direction for moving the carrying portion together with the recording medium up to a specific withdrawal position. The second slider is movable in a direction being substantially the same as the one direction of the first slider for moving the recording medium carried by the carrying portion to a recording and/or reproducing position corresponding to a position of the recording and/or reproducing portion. The first slider and the second slider are overlapped relative to each other in the vertical direction.
    Type: Grant
    Filed: May 9, 2001
    Date of Patent: December 2, 2003
    Assignee: Sony Corporation
    Inventors: Takeshi Igarashi, Yutaka Fukuyama, Takashi Suezaki
  • Publication number: 20030116434
    Abstract: The package of a multilayer film electrode web for an electrolyte slide of the invention comprises a packaging film web and the multilayer film electrode web superposed to each other, wherein the multilayer film electrode web is provided with an ion-selective membrane at central portion of the web, wherein the packaging film web is provided with raised portions on both side ends having a height higher than the thickness of the ion-selective membrane, wherein the ion-selective membrane is arranged to exist between the raised portions on both side ends, which protects the ion-selective membrane from being damaged by a foreign body.
    Type: Application
    Filed: November 25, 2002
    Publication date: June 26, 2003
    Inventors: Masaaki Terashima, Takeshi Igarashi, Osamu Seshimoto, Sadao Yamada
  • Patent number: 6570580
    Abstract: An apparatus for information display for displaying not only periodic information in accordance with schedule, but also non-periodic information regardless of the schedule, to passengers and passersby in stations, airports, harbors, bus terminals and streets, and the like. The apparatus comprises an information-storing section for storing a plurality of non-periodic information to be displayed regardless of the schedule, an input circuit for receiving a plurality of input signals transmitted from an external device or a remote place and display control section for simultaneously displaying the non-periodic information and periodic information which correspond to the kind of an input signal, when the apparatus receives this input signal from the external apparatus or the remote place. The apparatus may be a multi-screen display type having a plurality of screens.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Hitoshi Suzuki, Naohisa Koizumi, Goro Ohnishi, Tomohisa Kohiyama, Kazushi Kobayashi, Takeshi Igarashi, Hironori Oikawa, Hiroyuki Mano
  • Publication number: 20030057107
    Abstract: Wastewater treatment operations, i.e. the coagulation, decomposition, sterilization and separation of impurities such as the sludge, organisms, etc. in a liquid to be treated are carried out by applying an AC voltage of a specific frequency between first and second electrodes provided in the liquid to be treated, and thereby making an AC field work on the same liquid. An AC voltage of a high frequency suited to the quality of the water in a frequency band in which metal ions, hydrogen, oxygen is dissolved into and take out in large quantities, occurring in the AC electrolysis of the object liquid elute and an AC voltage of a low frequency are switched from one to the other in a contactless manner in a predetermined cycle, and the resultant voltage is applied to the first and second electrodes. This causes crystals and bubbles of the water to be fractionated, sludge, organisms, etc.
    Type: Application
    Filed: September 26, 2001
    Publication date: March 27, 2003
    Inventor: Takeshi Igarashi
  • Publication number: 20030039097
    Abstract: A personal computer provided with heat-generating parts such as a CPU, a cooling unit that releases the heat generated by the heat-generating part to the outside of the personal computer has a container structure so that the cooling liquid in the interior does not leak to the outside. Also, part of the container structure is provided with a heat connection part for receiving the heat transferred from the outside of the cooling unit. Furthermore, there is provided means of heat transfer for transferring the heat generated by the heat-generating part to the cooling unit, one end of this means of heat transfer being thermally connected to the heat connection part of the cooling unit and the other end thereof being thermally connected to the heat-generating part. This prevents troubles in the personal computer due to the moisture permeation of the cooling liquid of cooling unit and leakage of the cooling liquid. Also, disassembly and assembly is made easy by forming the cooling unit as a separate structure.
    Type: Application
    Filed: March 26, 2002
    Publication date: February 27, 2003
    Inventor: Takeshi Igarashi
  • Patent number: 6462794
    Abstract: An enlarging unit comprises a concave Fresnel lens warped convexly toward an image forming unit side, the image forming unit is held between a light transmissible support plate warped convexly toward the image forming unit side and the enlarging unit warped convexly toward the image forming unit side, and peripheries of the support plate and the enlarging unit are fixed or semi-fixed. Thereby, deformation caused when the incident side and emission side micro-lens arrays are molded and deformation due to environmental temperature and humidity change are corrected, and both components are always maintained in close contact.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: October 8, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Hiroki Yoshikawa, Tetsu Ohishi, Hideo Tanide, Takesuke Maruyama, Goro Ohnishi, Takashi Iwata, Takeshi Igarashi
  • Publication number: 20020088994
    Abstract: A semiconductor device includes a compound semiconductor substrate having a resistivity less than 1.0×108 Ohm-cm at least at one surface thereof, a buffer layer formed on the compound semiconductor substrate and having a super lattice structure, and an active layer formed on the buffer layer and having an active element formed therein.
    Type: Application
    Filed: January 4, 2002
    Publication date: July 11, 2002
    Applicant: Fujitsu Quantum Devices Limited
    Inventors: Fumikazu Yamaki, Takeshi Igarashi