Patents by Inventor Hitoshi Kawashima

Hitoshi Kawashima 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: 20240136419
    Abstract: A height of an upper surface of a control gate electrode is lower than a highest position of a lower surface of a silicide layer on a memory gate electrode adjacent to the control gate electrode via an ONO film. As a result, a structure in contact with the ONO film between the control gate electrode and the memory gate electrode is only the control gate electrode and the memory gate electrode made of polysilicon.
    Type: Application
    Filed: October 19, 2022
    Publication date: April 25, 2024
    Inventors: Hitoshi MAEDA, Yoshiyuki KAWASHIMA
  • Publication number: 20240101483
    Abstract: To provide at least one of: a powder composition from which a calcined body with similar processability can be produced without requiring the application of different forming conditions and calcination conditions for each composition; a method for producing the powder composition; a calcined body produced from the powder composition; a method for producing the calcined body; and uses thereof. A powder composition including: two or more types of zirconia in which a lanthanoid rare-earth element is dissolved; a transition metal element other than zirconium and hafnium; and a remainder composed of zirconia stabilized only by one or more selected from the group consisting of yttrium, calcium and magnesium, wherein a different lanthanoid rare-earth element is dissolved in each zirconia in which the lanthanoid rare-earth element is dissolved, and a transition metal element content is 1500 ppm or less.
    Type: Application
    Filed: January 19, 2022
    Publication date: March 28, 2024
    Applicant: TOSOH CORPORATION
    Inventors: Sho AZECHI, Yuki USHIO, Takahiro SHIMIZU, Yuya HIGUCHI, Hitoshi NAGAYAMA, Hiroyuki FUJISAKI, Kenji IMAI, Risa KAWASHIMA
  • Publication number: 20240071097
    Abstract: An apparatus for object detection detects a number of lanes included in a road on which a vehicle is traveling, detects one or more surrounding vehicles positioned in surroundings of the vehicle from a surrounding image showing the surroundings of the vehicle generated by a camera mounted in the vehicle, and determines, when more surrounding vehicles than the number of lanes detected in a predetermined range at the back of the vehicle are detected alongside in a width direction of the vehicle, that a possibility that any one of the surrounding vehicles being an emergency vehicle which is allowed to travel without obeying the traveling rule of the road is higher than when more surrounding vehicles than the number of lanes are not detected alongside in a width direction of the vehicle.
    Type: Application
    Filed: August 10, 2023
    Publication date: February 29, 2024
    Inventors: Takuya Fujiki, Ryusuke Kuroda, Tadashi Okubo, Kenichiro Aoki, Tetsuro Sugiura, Wataru Kawashima, Hitoshi Kamada
  • Publication number: 20240067168
    Abstract: A vehicle controller includes a processor configured to detect a vehicle ahead of a host vehicle from time-series sensor signals obtained by a sensor provided on the host vehicle for sensing objects around the host vehicle, track the vehicle ahead detected from the time-series sensor signals, determine whether the vehicle ahead has performed an avoidance action, based on the result of tracking, detect, when the vehicle ahead has performed an avoidance action, a trajectory of an edge of the vehicle ahead opposite a direction of avoidance in the avoidance action, and control travel of the host vehicle so that an edge of the host vehicle opposite the direction of avoidance moves along the detected trajectory.
    Type: Application
    Filed: July 21, 2023
    Publication date: February 29, 2024
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Ryusuke KURODA, Kenichiro Aoki, Tetsuro Sugiura, Takuya Fujiki, Hitoshi Kamada, Wataru Kawashima, Tadashi Okubo
  • Patent number: 11022811
    Abstract: An optical amplifier includes a polarization splitter, a polarization rotator, first and second optical couplers, and first and second semiconductor optical amplifying devices. The TE polarized wave of light split by the polarization splitter is input to a first input port of the first optical coupler. The TM polarized wave of the split light is converted into a TE polarized wave by the polarization rotator to be input to a second input port of the first optical coupler. First light and second light output from a first output port and a second output port of the first optical coupler are amplified by the first semiconductor optical amplifying device and the second semiconductor optical amplifying device to be input to a first input port and a second input port of the second optical coupler, respectively. Third light is output from an output port of the second optical coupler.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: June 1, 2021
    Assignees: FUJITSU LIMITED, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Suguru Akiyama, Kazuhiro Ikeda, Takeshi Matsumoto, Hitoshi Kawashima, Keijiro Suzuki, Ken Tanizawa
  • Patent number: 10901242
    Abstract: Provided is a driving device for PWM control of voltage pulses for controlling the temperature of a heater in a phase controller, the driving device being capable of increasing the response speed of an optical element such as an optical switch. Phase controllers include first and second heaters for changing the temperatures of first and second optical waveguides extending in parallel. Driving devices include pulse generation circuits that generate voltage pulses to apply to the first and second heaters. To start raising the temperature of the second heater, the pulse generation circuit generates a first voltage pulse and consecutive second voltage pulses to apply to the second heater with zero voltage pulse being applied to the first heater, the first voltage pulse having a long pulse width and the second voltage pulses following the first voltage pulse and having a shorter pulse width than the first voltage pulse.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: January 26, 2021
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Ken Tanizawa, Hiroyuki Matsuura, Satoshi Suda, Haruhiko Kuwatsuka, Keijiro Suzuki, Guangwei Cong, Kazuhiro Ikeda, Hitoshi Kawashima, Shu Namiki
  • Publication number: 20200271962
    Abstract: Provided is a driving device for PWM control of voltage pulses for controlling the temperature of a heater in a phase controller, the driving device being capable of increasing the response speed of an optical element such as an optical switch. Phase controllers include first and second heaters for changing the temperatures of first and second optical waveguides extending in parallel. Driving devices include pulse generation circuits that generate voltage pulses to apply to the first and second heaters. To start raising the temperature of the second heater, the pulse generation circuit generates a first voltage pulse and consecutive second voltage pulses to apply to the second heater with zero voltage pulse being applied to the first heater, the first voltage pulse having a long pulse width and the second voltage pulses following the first voltage pulse and having a shorter pulse width than the first voltage pulse.
    Type: Application
    Filed: November 9, 2016
    Publication date: August 27, 2020
    Inventors: Ken TANIZAWA, Hiroyuki MATSUURA, Satoshi SUDA, Haruhiko KUWATSUKA, Keijiro SUZUKI, Guangwei CONG, Kazuhiro IKEDA, Hitoshi KAWASHIMA, Shu NAMIKI
  • Patent number: 10613412
    Abstract: A conventional optical switching engine has difficulty in producing a universal multiport switching engine being capable of (i) programmatically changing regions to be switched, (ii) generating no wavelength dependent loss, (iii) having a small Walk-off, and (iv) being usable for small to large light beams. Produced is a light beam deflecting element in which a polarization grating is fitted in parallel on an N×M transmissive birefringence modulator formed such that a transmissive variable half-wavelength liquid crystal plate is divided into rectangular extreme small pixels, and many N and M pixels thus obtained are respectively arranged in X and Y axes directions in a matrix form, the polarization grating being a grating in which a period ? changes in an X? axis direction (direction to which a birefringence axis rotates) in accordance with a wavelength width of light.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: April 7, 2020
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE
    Inventors: Hisato Uetsuka, Shu Namiki, Hitoshi Kawashima, Kazuhiro Ikeda
  • Publication number: 20190049743
    Abstract: An optical amplifier includes a polarization splitter, a polarization rotator, first and second optical couplers, and first and second semiconductor optical amplifying devices. The TE polarized wave of light split by the polarization splitter is input to a first input port of the first optical coupler. The TM polarized wave of the split light is converted into a TE polarized wave by the polarization rotator to be input to a second input port of the first optical coupler. First light and second light output from a first output port and a second output port of the first optical coupler are amplified by the first semiconductor optical amplifying device and the second semiconductor optical amplifying device to be input to a first input port and a second input port of the second optical coupler, respectively. Third light is output from an output port of the second optical coupler.
    Type: Application
    Filed: August 6, 2018
    Publication date: February 14, 2019
    Applicants: FUJITSU LIMITED, National Institute of Advanced Industrial Science and Technology
    Inventors: Suguru AKIYAMA, Kazuhiro IKEDA, Takeshi MATSUMOTO, Hitoshi KAWASHIMA, Keijiro SUZUKI, Ken TANIZAWA
  • Publication number: 20180143508
    Abstract: A conventional optical switching engine has difficulty in producing a universal multiport switching engine being capable of (i) programmatically changing regions to be switched, (ii) generating no wavelength dependent loss, (iii) having a small Walk-off, and (iv) being usable for small to large light beams. Produced is a light beam deflecting element in which a polarization grating is fitted in parallel on an N×M transmissive birefringence modulator formed such that a transmissive variable half-wavelength liquid crystal plate is divided into rectangular extreme small pixels, and many N and M pixels thus obtained are respectively arranged in X and Y axes directions in a matrix form, the polarization grating being a grating in which a period ? changes in an X? axis direction (direction to which a birefringence axis rotates) in accordance with a wavelength width of light.
    Type: Application
    Filed: April 18, 2016
    Publication date: May 24, 2018
    Inventors: Hisato Uetsuka, Shu Namiki, Hitoshi Kawashima, Kazuhiro Ikeda
  • Publication number: 20130272650
    Abstract: A wavelength cross connect device includes an input demultiplexing optical system for demultiplexing light input from a plurality of input ports into respective wavelengths, a wavelength switching optical system for switching and outputting the lights of respective wavelengths input from the input demultiplexing optical system to respective desired ports, and an output multiplexing optical system for multiplexing the lights of respective wavelengths input from the wavelength switching optical system per port. The input demultiplexing optical system and the output multiplexing optical system includes a lens system that has a function of focusing lights independently in vertical and widthwise directions.
    Type: Application
    Filed: March 25, 2013
    Publication date: October 17, 2013
    Applicants: National Institute of Advanced Industrial Science and Technology, KEIO UNIVERSITY, HITACHI CABLE, LTD.
    Inventors: Hiroshi Ishikawa, Toshifumi Hasama, Hitoshi Kawashima, Masahiko Mori, Hisato Uetsuka, Akihito Hongo, Hiroyuki Tsuda, Keisuke Sorimoto, Nazirul Afham bin Idris
  • Patent number: 8503836
    Abstract: To provide a waveguide type wavelength domain optical switch which makes it possible to use a cheap lens, makes it possible to correct aberration of the demultiplexed wavelengths produced in a plurality of waveguide type demultiplexing circuits, a wavelength domain optical switch is provided with: an integrated element formed by laminating three or more waveguide type demultiplexing circuits; a first lens for collecting light emitted from the integrated element; a polarization separation element for separating light emitted from the first lens into X polarization and Y polarization and emitting the X polarization and the Y polarization at different angles; a second lens for collecting the X polarization and the Y polarization; a first reflective optical phase modulator for reflecting the collected X polarization and Y polarization at any angles; a ½-wavelength plate disposed between the second lens and the first reflective optical phase modulator in order to make polarization directions of the X polarization
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: August 6, 2013
    Assignees: National Institute of Advanced Industrial Science and Technology, Hitachi Cable, Ltd, Keio University
    Inventors: Hiroshi Ishikawa, Toshifumi Hasama, Hitoshi Kawashima, Kenji Kintaka, Masahiko Mori, Hisato Uetsuka, Hiroyuki Tsuda, Keisuke Sorimoto
  • Patent number: 8229258
    Abstract: An optical waveguide-type wavelength domain switch includes a waveguide-type multi/demultiplexing device laminate comprising three or more laminated waveguide-type multi/demultiplexing devices, a lens system positioned on a demultiplex side of the waveguide-type multi/demultiplexing device laminate, and a reflective optical phase-modulating cell positioned on an opposite side of the waveguide-type multi/demultiplexing device laminate to the lens system.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: July 24, 2012
    Assignees: National Institute of Advanced Industrial Science and Technology, Hitachi Cable, Ltd., Keio University
    Inventors: Hiroshi Ishikawa, Toshifumi Hasama, Hitoshi Kawashima, Kenji Kintaka, Masahiko Mori, Hisato Uetsuka, Hiroyuki Tsuda, Keisuke Sorimoto
  • Publication number: 20110182545
    Abstract: To provide a waveguide type wavelength domain optical switch which makes it possible to use a cheap lens, makes it possible to correct aberration of the demultiplexed wavelengths produced in a plurality of waveguide type demultiplexing circuits, a wavelength domain optical switch is provided with: an integrated element formed by laminating three or more waveguide type demultiplexing circuits; a first lens for collecting light emitted from the integrated element; a polarization separation element for separating light emitted from the first lens into X polarization and Y polarization and emitting the X polarization and the Y polarization at different angles; a second lens for collecting the X polarization and the Y polarization; a first reflective optical phase modulator for reflecting the collected X polarization and Y polarization at any angles; a ½-wavelength plate disposed between the second lens and the first reflective optical phase modulator in order to make polarization directions of the X polarization
    Type: Application
    Filed: January 26, 2011
    Publication date: July 28, 2011
    Applicants: National Institute of Advanced Industrial Science and Technology, Hitachi Cable, Ltd., Keio University
    Inventors: Hiroshi Ishikawa, Toshifumi Hasama, Hitoshi Kawashima, Kenji Kintaka, Masahiko Mori, Hisato Uetsuka, Hiroyuki Tsuda, Keisuke Sorimoto
  • Patent number: 7849709
    Abstract: An indoor unit of an air conditioner includes a cross flow fan and an indoor heat exchanger. The cross flow fan generates a flow of air. The heat exchanger has a two row part and a one row part. The one row part has an area that is smaller than the two row part, and is disposed so that it overlaps one part of the two row part in an air transit direction. Furthermore, during a cooling operation, a refrigerant flows to the two row part before flowing to the one row part.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: December 14, 2010
    Assignee: Daikin Industries, Ltd.
    Inventors: Yohei Takada, Hitoshi Kawashima, Mikio Ito, Masaaki Kitazawa
  • Publication number: 20100067900
    Abstract: An optical waveguide-type wavelength domain switch includes a waveguide-type multi/demultiplexing device laminate comprising three or more laminated waveguide-type multi/demultiplexing devices, a lens system positioned on a demultiplex side of the waveguide-type multi/demultiplexing device laminate, and a reflective optical phase-modulating cell positioned on an opposite side of the waveguide-type multi/demultiplexing device laminate to the lens system.
    Type: Application
    Filed: September 16, 2009
    Publication date: March 18, 2010
    Applicants: National Institute of Advanced Industrial Science and Technology, HITACHI CABLE, LTD., KEIO UNIVERSITY
    Inventors: Hiroshi Ishikawa, Toshifumi Hasama, Hitoshi Kawashima, Kenji Kintaka, Masahiko Mori, Hisato Uetsuka, Hiroyuki Tsuda, Keisuke Sorimoto
  • Publication number: 20080028784
    Abstract: An indoor unit of an air conditioner includes a cross flow fan and an indoor heat exchanger. The cross flow fan generates a flow of air. The heat exchanger has a two row part and a one row part. The one row part has an area that is smaller than the two row part, and is disposed so that it overlaps one part of the two row part (83) in an air transit direction. Furthermore, during a cooling operation, a refrigerant flows to the two row part before flowing to the one row part.
    Type: Application
    Filed: October 19, 2005
    Publication date: February 7, 2008
    Applicant: Daikin Industries, Ltd.
    Inventors: Yohei Takada, Hitoshi Kawashima, Mikio Ito, Masaaki Kitazawa
  • Patent number: 6458824
    Abstract: The present invention provides a solid preparation comprising a crystal of [3-[(2R)-[[(2R)-(3-chlorophenyl)-2-hydroxyethyl]amino]propyl]-1H-indol-7-yloxy]acetic acid (Compound A), especially a crystal of Compound A having a particle size of not larger than 100 &mgr;m at the cumulative weight distribution value of 50%, and not larger than 200 &mgr;m at the cumulative weight distribution value of 95%, preferably a solid preparation having the excellent stability and the content uniformity of Compound A, which is prepared by preparing granules of the crystal of Compound A with fillers, disintegrants and binders, and then followed by mixing said granules with external excipients.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: October 1, 2002
    Assignee: Dainippon Pharmaceutical Co., Ltd.
    Inventors: Motokazu Iwata, Teruaki Kuriyama, Megumi Fujita, Keiichi Fujiwara, Shiro Kato, Hiroshi Harada, Akihito Fujii, Osamu Odai, Hitoshi Kawashima
  • Patent number: 5946085
    Abstract: A dielectric dispersion determining method applying a transient grating method. The transient response of a sample is observed by the transient grating method using a femtosecond ultrashort visible optical pulse. A vibrational waveform b(t) is determined such that its square b(t).sup.2 replicates vibrational components observed in the transient response. The vibrational waveform b(t) is converted into b(.omega.) through the Fourier transform. The dielectric constant .epsilon.(.omega.) is obtained by substituting the converted value for b(.omega.)/.omega..sup.2 on the right-hand side of the following equation (1) derived from Maxwell's equations. The dielectric constant and/or refraction index can be directly obtained from the transient response to the femtosecond ultrashort visible optical pulse without passing through the dispersion relation which leaves some ambiguity in its definition.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: August 31, 1999
    Assignee: Agency of Industrial Science and Technology
    Inventors: Hitoshi Kawashima, Fumio Sasaki, Shunsuke Kobayashi, Toshiro Tani
  • Patent number: 5817689
    Abstract: An indole derivative of the formula: ##STR1## wherein R.sub.1 is lower alkoxy, lower alkoxycarbonyl-lower alkoxy, carboxy-lower alkoxy, lower alkoxycarbonyl, phenyl-lower alkoxy, lower alkyl being optionally substituted by hydroxy, di-lower alkylaminosulfonyl, etc., R.sub.2 is hydrogen, halogen, lower alkoxy, lower alkoxycarbonyl-lower alkoxy, carboxy-lower alkoxy, etc., R.sub.3 is hydrogen or lower alkyl, R.sub.4 is halogen or trifluoromethyl, R.sub.5 is lower alkyl, or a salt thereof, these compounds being potent .beta..sub.3 -adrenergic receptor-stimulating agent with excellent adrenoceptor selectivity, and being useful in the prophylaxis or treatment of obesity or diabetes mellitus.
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: October 6, 1998
    Assignee: Dainippon Pharmaceutical Co., Ltd.
    Inventors: Shiro Kato, Hiroshi Harada, Yoshimi Hirokawa, Naoyuki Yoshida, Hitoshi Kawashima