Patents by Inventor Toshiaki Matsui

Toshiaki Matsui 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: 7589221
    Abstract: The present invention relates to a process for producing (2R)-2-propyloctanoic acid, which comprises subjecting (2R)-2-hexyloxirane to a two-carbon adding reaction with ring-opening reaction, followed by a protecting reaction of a hydroxyl group to convert it to a compound represented by formula (I): (wherein X represents an optionally protected hydroxyl group) and then subjecting the compound to a one-carbon adding reaction to convert it to (2R)-2-propyloctanamide, followed by recrystallization and hydrolysis. According to the process of the present invention, (2R)-2-propyloctanoic acid can be produced by less steps as compared with the conventional method without a dangerous reaction.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: September 15, 2009
    Assignee: Ono Pharmaceutical Co., Ltd.
    Inventors: Yasumasa Hamada, Tomoyuki Hasegawa, Toshiaki Matsui, Eiji Kasamatsu
  • Publication number: 20080108504
    Abstract: Disclosed is a measuring structure for a magneto encephalographic equipment superconducting magnetic-shield comprising a vacuum-tight body comprising an outer enclosure wall, a first inner enclosure wall inserted in the outer enclosure wall to define an upper closed space, and a second inner enclosure wall to define a lower open space. The first and second inner enclosure walls are arranged with the bottom of the first inner enclosure wall facing the ceiling of the second inner enclosure wall. A first enclosure of high critical temperature superconductor and a second enclosure of high permeability material are concentrically arranged in the annular vacuum space defined between the first and second inner enclosure walls and the outer enclosure wall.
    Type: Application
    Filed: June 20, 2007
    Publication date: May 8, 2008
    Applicant: National Institute of Information and Communications Technology
    Inventors: Toshiaki Matsui, Hiroshi Ohta
  • Publication number: 20080067500
    Abstract: It is possible to improve the negative resistance characteristic that can be expected when an SNS (superconductor-normal conductor-superconductor) structure is used as a structure unit for series connection. On the top of a first superconducting electrode, a second superconducting electrode is superimposed so as to sandwich an insulation film between the first and second superconducting electrodes, with parts of cross sections of the second superconducting electrode and insulation film placed on the top. A normal superconducting line electrically connects the first and second superconducting electrodes passing along the cross section of the insulation film, thereby constituting a structure unit having a single weak link. A plurality of such structure units connected in series are prepared. At the both ends of the series the first or second superconducting electrode is an element connected to a leading line.
    Type: Application
    Filed: October 4, 2005
    Publication date: March 20, 2008
    Inventors: Toshiaki Matsui, Hiroshi Ohta, Akira Kawakami
  • Publication number: 20060135802
    Abstract: The present invention relates to a process for producing (2R)-2-propyloctanoic acid, which comprises subjecting (2R)-2-hexyloxirane to a two-carbon adding reaction with ring-opening reaction, followed by a protecting reaction of a hydroxyl group to convert it to a compound represented by formula (I): (wherein X represents an optionally protected hydroxyl group) and then subjecting the compound to a one-carbon adding reaction to convert it to (2R)-2-propyloctanamide, followed by recrystallization and hydrolysis. According to the process of the present invention, (2R)-2-propyloctanoic acid can be produced by less steps as compared with the conventional method without a dangerous reaction.
    Type: Application
    Filed: June 9, 2004
    Publication date: June 22, 2006
    Inventors: Yasumasa Hamada, Tomoyuki Hasegawa, Toshiaki Matsui, Eiji Kasamatsu
  • Publication number: 20050272996
    Abstract: The present invention provides a low-noise MEG apparatus of high sensitivity. A MEG apparatus using a magnetic shield of high critical temperature superconductor is set on the floor of a building via mechanical vibration suppressor supports to prevent appearance of noise signals. Also, the apparatus is equipped with means for preventing any relative displacement between the SQUID magnetic sensors and the magnetic shield of high critical temperature superconductor, thereby not letting an inevitable mechanical vibration of least strength produce any variable components of the trapped static magnetic field, which the SQUID magnetic sensors could be sensitive to.
    Type: Application
    Filed: July 29, 2005
    Publication date: December 8, 2005
    Inventors: Toshiaki Matsui, Hiroshi Ohta
  • Patent number: 6781523
    Abstract: Roadside wireless devices are installed at roadside positions corresponding to the traffic lanes entering an intersection. Roadside wireless devices are also installed at roadside positions corresponding to the traffic lanes exiting an intersection. The roadside wireless devices on the entrance side receive an identification number from vehicle-mounted wireless ID devices of vehicles entering the intersection and transmit them to a roadside traffic monitoring device. Thereafter, the roadside wireless devices on the exit side receive an identification number from the vehicle-mounted wireless ID devices of vehicles exiting the intersection and transmit them to the roadside traffic monitoring device. From the identification numbers received, the roadside traffic monitoring device is able to determine the entrance from which a vehicle judged to be the same one had entered and the exit from which it exited, along with the type of vehicle.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: August 24, 2004
    Assignees: National Institute of Information and Communications Technology, Kinashi Denki Manufacturing Co., Ltd.
    Inventors: Toshiaki Matsui, Harunobu Yuzawa, Akira Kobayashi
  • Patent number: 6518932
    Abstract: A combination antenna and radio communication device comprises a dielectric base (10) on which a multislot antenna (101) made of conductor, a coplanar transmission line (102), a power supply line, and a high-frequency unit (104) are provided. A conductive package (105) and the dielectric base (103) hermetically seal the high-frequency unit (104), the coplanar transmission line (102), and the multislot antenna (101). The lower face of the dielectric base (103) faces to a conductive sheet (107) having an opening (106) for passing therethrough electromagnetic waves. Electromagnetic waves are passed through the dielectric base (103) and taken out through the opening (106). Therefore the combination antenna and radio device for pseudo-millimeteric and millimeteric waves have a small size, high performance and excellent massproductivity.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: February 11, 2003
    Assignees: Communications Research Laboratory, Independent Administrative Institute, Sharp Kabushiki Kaisha
    Inventors: Toshiaki Matsui, Atsushi Yamada
  • Patent number: 6515465
    Abstract: A method for measuring harmonic load-pull including supplying a fundamental frequency signal to a frequency multiplication device under test and obtaining a target even-order multiplied frequency signal. The fundamental load impedance and an even-harmonic load impedance are independently controlled with a load mechanical tuner having an open-ended stub that is one-quarter wavelength long at the fundamental frequency and satisfies a short-circuit condition with respect to the fundamental signal. A fundamental source impedance and an even-harmonic source impedance of an input signal applied to the device under test are independently controlled with a source mechanical tuner having a short-circuit stub that is one-quarter wavelength long at the fundamental frequency and satisfies a short-circuit condition with respect to even-harmonics.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: February 4, 2003
    Assignee: Communications Research Laboratory, Independant Administration Institution
    Inventors: Masahiro Kiyokawa, Toshiaki Matsui
  • Patent number: 6495533
    Abstract: The present invention relates to phosphoric acid derivatives represented by general formula (I), wherein each symbol is as defined in the description and nontoxic salts thereof. Because of having a TNF&agr; production inhibitory effect, the compounds represented by general formula (I) are useful as preventives and/or remedies for rheumatoid arthritis, ulcerative colitis, Crohn's disease, hepatitis, sepsis, hemorrhagic shock, multiple sclerosis, cerebral infarction, diabetes, interstitial pneumonia, uveitis, pain, glomerulonephritis, HIV-associated diseases, cachexia, myocardial infarction, chronic heart failure, oral aphtha, Hansen's disease, infection, etc.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: December 17, 2002
    Assignee: Ono Pharmaceutical Co., Ltd.
    Inventors: Toshiaki Matsui, Nagashige Omawari
  • Patent number: 6476582
    Abstract: In a battery power supply apparatus for low-noise measurement systems or ultra high-sensitivity sensor elements (ultra-sensitive light or microwave sensors, or SQUID, SIS/SNS or other Josephson effect devices, etc.), the power supply device that supplies power to the outside and the control device that controls the power supply device perform bidirectional communications by means of an optical communications circuit, and thus it is possible to prevent noise arising in the control device from reaching the power supply device. In addition, it is possible to prevent the introduction of noise from the optical communications circuit into the power supply device within a shield case. Accordingly, it is possible to control the operation of the power supply device enclosed within the shield case from the control device outside of the shield case without having external noise affecting the power supply device.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: November 5, 2002
    Assignee: Communications Research Laboratory, Independent Administrative Institution
    Inventors: Saburo Yokokura, Munecazu Tacano, Toshiaki Matsui
  • Publication number: 20020145541
    Abstract: Roadside wireless devices (1) are installed at roadside positions corresponding to the traffic lanes entering an intersection. Roadside wireless devices (1) are also installed at roadside positions corresponding to the traffic lanes exiting an intersection. The roadside wireless devices (1) on the entrance side receive an identification number from vehicle-mounted wireless ID devices (3) of vehicles entering the intersection and transmit them to a roadside traffic monitoring device (2). Thereafter, the roadside wireless devices (1) on the exit side receive an identification number from the vehicle-mounted wireless ID devices (3) of vehicles exiting the intersection and transmit them to the roadside traffic monitoring device (2). From the identification numbers received, the roadside traffic monitoring device (2) is able to determine the entrance from which a vehicle judged to be the same one had entered and the exit from which it exited, along with the type of vehicle.
    Type: Application
    Filed: March 29, 2002
    Publication date: October 10, 2002
    Applicant: Communications Res. Lab., Ind. Admin. Inst. (90%)
    Inventors: Toshiaki Matsui, Harunobu Yuzawa, Akira Kobayashi
  • Publication number: 20020130636
    Abstract: In a battery power supply apparatus for low-noise measurement systems or ultra high-sensitivity sensor elements (ultra-sensitive light or microwave sensors, or SQUID, SIS/SNS or other Josephson effect devices, etc.), the power supply device that supplies power to the outside and the control device that controls the power supply device perform bidirectional communications by means of an optical communications circuit, and thus it is possible to prevent noise arising in the control device from reaching the power supply device. In addition, it is possible to prevent the introduction of noise from the optical communications circuit into the power supply device within a shield case. Accordingly, it is possible to control the operation of the power supply device enclosed within the shield case from the control device outside of the shield case without having external noise affecting the power supply device.
    Type: Application
    Filed: September 28, 2001
    Publication date: September 19, 2002
    Applicant: Communications Research Lab., Ind. Adm. Inst.
    Inventors: Saburo Yokokura, Munecazu Tacano, Toshiaki Matsui
  • Publication number: 20010024117
    Abstract: A method is provided for measuring harmonic load-pull for frequency multiplication to obtain a load impedance and a source impedance for which frequency multiplication performance of a frequency multiplication device is optimized. A fundamental frequency signal is supplied to a frequency multiplication device under test from a source measurement system that includes a source mechanical tuner for adjusting a fundamental source impedance of an input signal. A load impedance frequency is obtained at which multiplication performance of the frequency multiplication device is optimum from a load measurement system that includes a load mechanical tuner for adjusting a load impedance of a target even-order multiplied signal among harmonics included in signal output of the frequency multiplication device.
    Type: Application
    Filed: March 22, 2001
    Publication date: September 27, 2001
    Applicant: Communications Research Laboratory
    Inventors: Masahiro Kiyokawa, Toshiaki Matsui
  • Patent number: 6246295
    Abstract: A planar radiating oscillator apparatus for micro- and milliwaves includes a pair of conductor patches disposed with their pointed portions in proximity and their far edges on opposite sides, a high-frequency transistor disposed between and connected to the conductor patches, a conductor planar surface disposed under and parallel to the fan-shaped conductor patches from which it is separated by a distance equal to between one-fifteenth and one-fifth the generated wavelength therefrom, and at least one direct current power source connected to the conductor patches and having a ground potential in common with a source potential of the high-frequency transistor.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: June 12, 2001
    Assignees: Communications Research Laboratory, Ministry of Posts and Telecommunications
    Inventors: Toshiaki Matsui, Masami Murata
  • Patent number: 6051454
    Abstract: A lower resist film, which is made of PMMA for EB exposure and has a thickness of about 200 nm, is applied onto a substrate, and then an upper resist film to be exposed to i-rays is applied on the lower resist film. Thereafter, a mixed layer, in which the upper and lower resist films are mixed, is formed in the interface between the upper and lower resist films. Next, the upper resist film, except for the head-forming region thereof, is exposed to i-rays and developed, thereby forming an upper-layer opening. And then the mixed layer and a leg-forming region of the lower resist film are exposed to EB and developed, thereby forming a lower-layer opening having an upper part like a taper progressively expanding upward.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: April 18, 2000
    Assignees: Matsushita Electric Industrial Co., Ltd., Communications Research Laboratory, Ministry of Posts and Telecommunications
    Inventors: Yoshiharu Anda, Toshinobu Matsuno, Manabu Yanagihara, Mitsuru Tanabe, Toshiaki Matsui, Nobumitsu Hirose
  • Patent number: 5982245
    Abstract: A radiating oscillator apparatus for micro- and millimeter waves includes paired fan-shaped conductor patches disposed with their pointed portions in proximity and their arcuate portions on opposite sides, at least one high-frequency transistor disposed between and connected to the fan-shaped conductor patches, a conductor planar surface disposed under and parallel to the fan-shaped conductor patches at an interval of between one-fifteenth and one-fifth the generated wavelength therefrom, and a pair of direct current power supplies connected to the fan-shaped conductor patches separately with a common ground potential.
    Type: Grant
    Filed: March 4, 1998
    Date of Patent: November 9, 1999
    Assignee: Communications Research Laboratory, Ministry of Posts and Telecommunications
    Inventors: Toshiaki Matsui, Masami Murata
  • Patent number: 5581267
    Abstract: A Gaussian-beam antenna invention comprises a transmitting circuit or a receiving circuit, a resonator consisting of a pair of reflecting mirrors, which consist of a spherical mirror and a planar mirror or two spherical mirrors, and a transmission line which transmits a high-frequency signal between the aforesaid transmitting circuit or receiving circuit and the resonator, one reflecting mirror of the resonator having an electromagnetic wave coupling region constituted as a circular partially transparent mirror surface region having its center on the optical axis.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: December 3, 1996
    Assignee: Communications Research Laboratory, Ministry of Posts and Telecommunications
    Inventors: Toshiaki Matsui, Masahiro Kiyokawa
  • Patent number: 5450040
    Abstract: A Gaussian-beam oscillator for microwave and millimeter wave comprising a negative resistance amplifier circuit which produces and amplifies a high-frequency signal, a resonator consisting of a pair of reflecting mirrors, which consist of a spherical mirror and a planar mirror or two spherical mirrors, and a wave path which transmits the high-frequency signal between said resonator and said negative resistance amplifier circuit, one reflecting mirror of said resonator having an electromagnetic wave coupling region constituted as a circular partially transparent mirror surface region having its center on the optical axis, the other reflecting mirror having a strip element provided at the center of the optical axis and on the rear surface of said strip element having a coupling region for coupling with said wave path, said one reflecting mirror constituting said resonator and having the electromagnetic wave coupling region having a higher reflectance than the reflectance of the other reflecting mirror.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: September 12, 1995
    Assignee: Communications Research Laboratory, Ministry of Posts and Telecommunications
    Inventors: Toshiaki Matsui, Masahiro Kiyokawa
  • Patent number: 5379110
    Abstract: The surface characteristics with respect to a high-frequency electromagnetic field of a material to be tested are measured by placing opposite a flat mirror material to be tested one of a pair of concave spherical reflection mirrors fabricated in the same way and formed with high-reflectance circular coupling regions, placing the other spherical reflection mirror at a position symmetrical to the one reflection mirror with respect to the flat mirror material as the plane of symmetry, measuring the Q value of the open resonator formed by the one reflection mirror and the flat mirror material, removing the flat mirror material from the optical axis, measuring the Q value of the open resonator formed by the pair of spherical reflection mirrors, calculating the absolute value of the reflectance of the flat mirror material to be tested from the difference between the two measured Q values, and calculating the phase of the reflected wave at the surface of the flat mirror material to be tested from the measured reson
    Type: Grant
    Filed: October 23, 1992
    Date of Patent: January 3, 1995
    Assignee: Communications Research Laboratory, Ministry of Posts and Telecommunications
    Inventors: Toshiaki Matsui, Kenichi Araki
  • Patent number: 5109164
    Abstract: A superconducting weak link device includes a plurality of interconnected small superconducting regions and a plurality of conductive bridges which connect adjacent the small superconducting regions in which the length of the bridges is in the range from 1 to 5.31 times the coherence length.
    Type: Grant
    Filed: June 6, 1990
    Date of Patent: April 28, 1992
    Assignee: Communications Research Laboratory Ministry of Posts and Telecommunications
    Inventor: Toshiaki Matsui