Patents by Inventor Kiyoshi Hamaguchi

Kiyoshi Hamaguchi 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: 20200368273
    Abstract: An object of the present invention is to provide a highly effective method for treatment/remission of cancer, and prevention of recurrence/metastasis of cancer at low cost and with few side effects. A composition containing a urinary alkalinization agent, for use in treatment or remission of cancer, or prevention of recurrence or metastasis of cancer.
    Type: Application
    Filed: November 22, 2018
    Publication date: November 26, 2020
    Applicant: Delta-Fly Pharma, Inc.
    Inventors: Hiromi WADA, Kiyoshi ESHIMA, Tatsuhiro ISHIDA, Reo HAMAGUCHI
  • Patent number: 7872609
    Abstract: A low-cost, compact circular waveguide array antenna which improves an antenna reflection loss characteristic and enables an improvement in radiation characteristics, particularly radiation gain. The circular waveguide array antenna includes feeding portions which feed electromagnetic waves to one ends of circular waveguides and radiation apertures which radiate the electromagnetic waves at the opposite ends. Each circular waveguide includes a conical horn, with a diameter of a feeding side aperture at the feeding portion end being a, a diameter of the radiation aperture being d, which is larger than the diameter a of the feeding side aperture, and an opening angle being 2?. If a wavelength of a central frequency of an employed frequency band is ?, then a value of ?, which is half of the opening angle 2?, is set between 0.8×Arcsin(0.1349114/(d/?)) and 1.2×Arcsin(0.1349114/(d/?)).
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: January 18, 2011
    Assignees: Oki Electric Industry Co., Ltd., National Institute of Information and Communications Technology, Incorporated Administrative Agency
    Inventors: Hok Huor Ou, Seiji Nishi, Hiroyo Ogawa, Kiyoshi Hamaguchi, Yozo Shoji
  • Publication number: 20100231475
    Abstract: A low-cost, compact circular waveguide array antenna which improves an antenna reflection loss characteristic and enables an improvement in radiation characteristics, particularly radiation gain. The circular waveguide array antenna includes feeding portions which feed electromagnetic waves to one ends of circular waveguides and radiation apertures which radiate the electromagnetic waves at the opposite ends. Each circular waveguide includes a conical horn, with a diameter of a feeding side aperture at the feeding portion end being a, a diameter of the radiation aperture being d, which is larger than the diameter a of the feeding side aperture, and an opening angle being 2?. If a wavelength of a central frequency of an employed frequency band is ?, then a value of ?, which is half of the opening angle 2?, is set between 0.8×Arcsin(0.1349114/(d/?)) and 1.2×Arcsin(0.1349114/(d/?)).
    Type: Application
    Filed: January 23, 2007
    Publication date: September 16, 2010
    Inventors: Hok Huor Ou, Seiji Nishi, Hiroyo Ogawa, Kiyoshi Hamaguchi, Yozo Shoji
  • Patent number: 7697574
    Abstract: The present invention provides a radio communication device, a transmitter and a receiver capable of handling a plurality of signal waves. A radio communication device has a millimeter-wave transmitter (15) and a millimeter-wave receiver (29). Millimeter-wave transmitter (15) includes a multiplexing circuit (1), a millimeter-wave up-converter (4) and an antenna (3), and the millimeter-receiver includes an antenna (31), a millimeter-wave down-converter (32) and an output processing circuit (45). The signal waves dedicated to the user are modulated by a modulation circuit (121 to 124) so as to be allocated between the ground broadcast waves and satellite broadcast waves. The frequencies are multiplexed in an intermediate frequency band, after that, the multiplexed frequencies are converted into a millimeter-wave band and the resultant is transmitted. On the reception side, the multiplexed waves are down-converted, separated to signal waves and demodulated.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: April 13, 2010
    Assignees: Sharp Kabushiki Kaisha, National Institute of Information and Communications Technology
    Inventors: Eiji Suematsu, Hiroyo Ogawa, Kiyoshi Hamaguchi, Yozo Shoji
  • Patent number: 7599672
    Abstract: A receiver receives an RF-band modulated signal transmitted from a transmitter, as well as an un-modulated carrier also transmitted from the transmitter and having a phase noise characteristic coherent with that of the modulated signal, and a product of the two components is generated to thereby restore an IF-band transmission source signal. In the receiver, a small planar antenna having a broad beam characteristic such as a single-element patch antenna is combined with an amplifier and a mixer circuit, which are formed on a micro planar circuit by an MMIC technique, so as to form a unit receiving circuit. A plurality of such unit receiving circuits are disposed on the receiver at intervals smaller than a wavelength corresponding to an IF band, and detection outputs from the unit receiving circuits are power-mixed. Thus, the receiver serves as a high-gain antenna having a detection function, and can realize a broad beam radiation characteristic comparable to that of a single-element antenna.
    Type: Grant
    Filed: July 29, 2003
    Date of Patent: October 6, 2009
    Assignee: National Institute of Information and Communications Technology
    Inventors: Yozo Shoji, Kiyoshi Hamaguchi, Hiroyo Ogawa
  • Patent number: 7302236
    Abstract: A reference local oscillation signal transmission station 1 radiates a reference local oscillation signal to a service zone. A portion of the signal received by each radio slave station terminal 2 is branched and fed to an injection locked oscillator 6. As a result, a local oscillation signal which is synchronized with the reference local oscillation signal is obtained. In the slave station terminal 2, the thus-obtained local oscillation signal is fed to a transmission frequency converter (mixer) 7 and a reception frequency converter (mixer) 8. An IF band transmission modulated signal is fed to the mixer 7 for frequency conversion to a radio frequency band, and the thus-obtained radio-frequency modulated signal is transmitted. Meanwhile, a received radio-frequency modulated signal is fed to the mixer 8 for down conversion, and the thus-obtained signal is fed to an IF band demodulator 10 so as to restore an information signal.
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: November 27, 2007
    Assignee: National Institute of Information and Communications Technology
    Inventors: Yozo Shoji, Kiyoshi Hamaguchi, Hiroyo Ogawa
  • Patent number: 7292831
    Abstract: A transmitter 1 transmits from a transmission antenna 7 a mixture signal containing a radio-frequency (RF)-band modulated signal, and a portion of power of a local oscillation signal used for frequency conversion. Meanwhile, a receiver 8 detects the transmitted signal by means of a reception antenna-detection section 9. In the reception antenna-detection section 9, a plurality of base unit reception circuits 11 are disposed. Each base unit reception circuit 11 includes a planar printed antenna 12 such as a patch antenna, an amplifier circuit 13 formed on a very small planar circuit by means of an MMIC technique, and a mixer circuit 14 serving as a square-law detector. Respective outputs of the base unit reception circuits 11 are power-mixed and fed to the IF signal demodulation section. The IF signal demodulation section 10 demodulate reception data.
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: November 6, 2007
    Assignee: National Institute of Information and Communications Technology
    Inventors: Yozo Shoji, Kiyoshi Hamaguchi, Hiroyuki Tsuji, Hiroyo Ogawa
  • Patent number: 7251461
    Abstract: This invention includes a wireless transmitter comprising an IF-signal generator that modulates input signals into those of an intermediate frequency band, signal distributors that distribute signals from the IF-signal generator, and a plurality of signal-transmission units that convert the signals distributed by the signal distributors into those of a radio frequency band, and then transmit the converted radio signals. The invention also includes a wireless receiver that receives the radio-frequency-band modulated signals and restores the signals of the intermediate frequency band. In this way, effective diversity is realized and signal interruptions are prevented. In addition, a handy, low-cost wireless communications system is provided.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: July 31, 2007
    Assignee: National Institute of Information and Communication Technology
    Inventors: Yozo Shoji, Kiyoshi Hamaguchi, Hiroyo Ogawa
  • Publication number: 20060160514
    Abstract: A receiver receives an RF-band modulated signal transmitted from a transmitter, as well as an un-modulated carrier also transmitted from the transmitter and having a phase noise characteristic coherent with that of the modulated signal, and a product of the two components is generated to thereby restore an IF-band transmission source signal. In the receiver, a small planar antenna having a broad beam characteristic such as a single-element patch antenna is combined with an amplifier and a mixer circuit, which are formed on a micro planar circuit by an MMIC technique, so as to form a unit receiving circuit. A plurality of such unit receiving circuits are disposed on the receiver at intervals smaller than a wavelength corresponding to an IF band, and detection outputs from the unit receiving circuits are power-mixed. Thus, the receiver serves as a high-gain antenna having a detection function, and can realize a broad beam radiation characteristic comparable to that of a single-element antenna.
    Type: Application
    Filed: July 29, 2003
    Publication date: July 20, 2006
    Inventors: Yozo Shoji, Kiyoshi Hamaguchi, Hiroyo Ogawa
  • Patent number: 7043201
    Abstract: Only a first radio station is equipped with a local oscillation signal source. A signal transmitted to a second radio station includes local oscilaation signal components used to up-convert a modulated intermediate frequency band signal in addition to intermediate frequency band signal components. The second radio station that receives the signal from the first radio station extracts and regenerate the local oscillation signal used at the first radio station using a local oscillation signal regenerator. The extracted and regenerated local oscillation signal is used to down-convert modulated radio signal components to the intermediate frequency band and simultaneously up-convert to the radio frequency band the modulated intermediate frequency band signal to be transmitted to the first radio station.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: May 9, 2006
    Assignee: Communications Research Laboratory, Independent Administrative Institution
    Inventors: Yozo Shoji, Kiyoshi Hamaguchi, Hiroyo Ogawa
  • Publication number: 20050176377
    Abstract: A reference local oscillation signal transmission station 1 radiates a reference local oscillation signal to a service zone. A portion of the signal received by each radio slave station terminal 2 is branched and fed to an injection locked oscillator 6. As a result, a local oscillation signal which is synchronized with the reference local oscillation signal is obtained. In the slave station terminal 2, the thus-obtained local oscillation signal is fed to a transmission frequency converter (mixer) 7 and a reception frequency converter (mixer) 8. An IF band transmission modulated signal is fed to the mixer 7 for frequency conversion to a radio frequency band, and the thus-obtained radio-frequency modulated signal is transmitted. Meanwhile, a received radio-frequency modulated signal is fed to the mixer 8 for down conversion, and the thus-obtained signal is fed to an IF band demodulator 10 so as to restore an information signal.
    Type: Application
    Filed: January 9, 2003
    Publication date: August 11, 2005
    Inventors: Yozo Shoji, Kiyoshi Hamaguchi, Hiroyo Ogawa
  • Publication number: 20050143015
    Abstract: A transmitter 1 transmits from a transmission antenna 7 a mixture signal containing a radio-frequency (RF)-band modulated signal, and a portion of power of a local oscillation signal used for frequency conversion. Meanwhile, a receiver 8 detects the transmitted signal by means of a reception antenna-detection section 9. In the reception antenna-detection section 9, a plurality of base unit reception circuits 11 are disposed. Each base unit reception circuit 11 includes a planar printed antenna 12 such as a patch antenna, an amplifier circuit 13 formed on a very small planar circuit by means of an MMIC technique, and a mixer circuit 14 serving as a square-law detector. Respective outputs of the base unit reception circuits 11 are power-mixed and fed to the IF signal demodulation section. The IF signal demodulation section 10 demodulate reception data.
    Type: Application
    Filed: January 9, 2003
    Publication date: June 30, 2005
    Inventors: Yozo Shoji, Kiyoshi Hamaguchi, Hiroyuki Tsuji, Hiroyo Ogawa
  • Patent number: 6826234
    Abstract: In a radio communication apparatus and method, on the transmitting side, an input signal is modulated in an intermediate frequency band to produce a modulated intermediate frequency band signal, a local oscillation signal is used to up-convert the modulated intermediate frequency band signal to a modulated radio frequency band signal, and the local oscillation signal and the modulated radio frequency band signal are simultaneously transmitted as a radio signal, and, on the receiving side, the radio signal from the transmitter is received, the received signal is down-converted by multiplying the local oscillation signal component and the modulated radio frequency band signal component contained in the received signal to generate a multiplication component and thereby produce a modulated intermediate frequency band signal, and the modulated intermediate frequency band signal is demodulated.
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: November 30, 2004
    Assignee: National Institute of Information and Communications Technology
    Inventors: Yozo Shoji, Kiyoshi Hamaguchi, Hiroyo Ogawa
  • Publication number: 20040015990
    Abstract: The present invention provides a radio communication device, a transmitter and a receiver capable of handling a plurality of signal waves. A radio communication device has a millimeter-wave transmitter (15) and a millimeter-wave receiver (29). Millimeter-wave transmitter (15) includes a multiplexing circuit (1), a millimeter-wave up-converter (4) and an antenna (3), and the millimeter-receiver includes an antenna (31), a millimeter-wave down-converter (32) and an output processing circuit (45). The signal waves dedicated to the user are modulated by a modulation circuit (121 to 124) so as to be allocated between the ground broadcast waves and satellite broadcast waves. The frequencies are multiplexed in an intermediate frequency band, after that, the multiplexed frequencies are converted into a millimeter-wave band and the resultant is transmitted. On the reception side, the multiplexed waves are down-converted, separated to signal waves and demodulated.
    Type: Application
    Filed: April 18, 2003
    Publication date: January 22, 2004
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Eiji Suematsu, Hiroyo Ogawa, Kiyoshi Hamaguchi, Yozo Shoji
  • Publication number: 20030109236
    Abstract: This invention includes a wireless transmitter comprising an IF-signal generator that modulates input signals into those of an intermediate frequency band, signal distributors that distribute signals from the IF-signal generator, and a plurality of signal-transmission units that convert the signals distributed by the signal distributors into those of a radio frequency band, and then transmit the converted radio signals. The invention also includes a wireless receiver that receives the radio-frequency-band modulated signals and restores the signals of the intermediate frequency band. In this way, effective diversity is realized and signal interruptions are prevented. In addition, a handy, low-cost wireless communications system is provided.
    Type: Application
    Filed: October 17, 2002
    Publication date: June 12, 2003
    Inventors: Yozo Shoji, Kiyoshi Hamaguchi, Hiroyo Ogawa
  • Patent number: 6442146
    Abstract: The present invention is directed to a TDMA communication system which is adapted to different communication environments or prepares different communication environments and allows each mobile station to be set for working in any one of the different communication environments. The communication system commonly uses a TDMA format that has a fixed frame-length and a constant number of bits for each of the slots composing the frame. The communication environments have prepared respective sets of communication conditions, each set including a transmission power, a modulating method, the number of multiplexed signals, error-correction, an antenna gain, a frequency hopping value and a diversity value. At each mobile station and each base station, one of plural sets of communication conditions for respective environments is selected to establish communication with each other under the selected environment.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: August 27, 2002
    Assignees: Sharp Kabushiki Kaisha, Hitachi Ltd., Mitsubishi Denki Kabushiki Kaisha, Communication Research Laboratory, Ministry of Posts and Telecommunications, Nippon Telegraph And Telephone Corporation, NTT Mobile Communications Network, Inc., YRP Mobile Telecommunications Key Technology Research Laboratories Co. Ltd.
    Inventors: Tetsuo Onodera, Hiroshi Usami, Akihiro Shibuya, Eimatsu Moriyama, Kiyoshi Hamaguchi, Yoichi Saito, Tadashi Matsumoto, Mitsuhiko Mizuno
  • Publication number: 20010055953
    Abstract: Only a first radio station is equipped with a local oscillation signal source. A signal transmitted to a second radio station includes local oscilaation signal components used to up-convert a modulated intermediate frequency band signal in addition to intermediate frequency band signal components. The second radio station that receives the signal from the first radio station extracts and regenerated the local oscillation signal used at the first radio station using a local oscillation signal regenerator. The extracted and regenerated local oscillation signal is used to down-convert modulated radio signal components to the intermediate frequency band and simultaneously up-convert to the radio frequency band the modulated intermediate frequency band signal to be transmitted to the first radio station.
    Type: Application
    Filed: June 21, 2001
    Publication date: December 27, 2001
    Applicant: Communications Research Lab, Ind Admin Inst
    Inventors: Yozo Shoji, Kiyoshi Hamaguchi, Hiroyo Ogawa