Patents by Inventor Ryoji Yamamoto

Ryoji Yamamoto 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: 20240110890
    Abstract: A capillary array includes N analysis capillaries filled with a separation medium having a refractive index of n3 and used for electrophoretic analysis and N±1 lens capillaries filled with a medium having a refractive index of n4 and not used for the electrophoretic analysis, in which the N analysis capillaries and the N±1 lens capillaries are alternately arranged on the same array plane. When an outer diameter is defined as 2R, an inner diameter is defined as 2r, a refractive index of a medium of an outside is n1, and a refractive index of a material is defined as n2 for each of the N analysis capillaries and the N±1 lens capillaries, and when a refractive index n3 takes any value within the range of 1.33?n3?1.42, R, r, n1, n2, n3, and n4 satisfy a predetermined relationship, whereby the N analysis capillaries are efficiently simultaneously irradiated with the laser beam incident from a side of the array plane.
    Type: Application
    Filed: December 18, 2020
    Publication date: April 4, 2024
    Inventors: Takashi ANAZAWA, Ryoji INABA, Shuhei YAMAMOTO
  • Publication number: 20240097547
    Abstract: Provided is a magnetic strain wave gear device that makes it possible to achieve both improvement of the efficiency of assembly work and suppression of decrease in energy conversion efficiency. A magnetic strain wave gear device includes: a stator having a stator core, a stator winding, and a stator magnet; a first rotor; and a second rotor. The second rotor includes a second rotor core provided with a plurality of rotor magnet insertion holes and a plurality of rotor magnets inserted into the plurality of respective rotor magnet insertion holes. The first rotor includes a cylindrical first rotor core and a first rotor end plate. The first rotor end plate has a rotor magnet passage hole through which the rotor magnets can be inserted into the rotor insertion holes from outside in a direction of a rotation shaft.
    Type: Application
    Filed: August 2, 2021
    Publication date: March 21, 2024
    Applicants: Mitsubishi Electric Corporation, OSAKA UNIVERSITY
    Inventors: Yosuke UCHIDA, Ryoji MIYATAKE, Atsushi YAMAMOTO, Haruyuki KOMETANI, Noboru NIGUCHI, Katsuhiro HIRATA, Kazuaki TAKAHARA, Hironori SUZUKI, Takuya ITO
  • Patent number: 11627481
    Abstract: To provide a mobile communication terminal test device and a mobile terminal test method capable of easily generating test cases for a mobile communication terminal supporting 5G NR at low cost without omissions. Provided is a mobile terminal test device 1 that tests a mobile communication terminal 2 by simulating a mobile communication base station, the mobile terminal test device including: an acquisition unit (141) that acquires terminal capability information, which is information related to a capability of the mobile communication terminal, by communicating with the mobile communication terminal; an extraction unit (142) that extracts first capability information related to a first wireless communication method from the terminal capability information; and a generation unit (144) that generates a test case as a combination (210) of parameter setting values to be set in test parameters in the first wireless communication method, based on the first capability information.
    Type: Grant
    Filed: April 1, 2021
    Date of Patent: April 11, 2023
    Assignee: ANRITSU CORPORATION
    Inventors: Shunsuke Chino, Tsuyoshi Sato, Takuma Goto, Ryoji Yamamoto
  • Patent number: 11483725
    Abstract: Provided is a mobile terminal test device that tests a mobile communication terminal by simulating a mobile communication base station, the mobile terminal test device including: an acquisition unit that acquires terminal capability information, which is information related to a capability of the mobile communication terminal, by communicating with the mobile communication terminal; a generation unit that generates a test case as a combination of parameter setting values set in test parameters based on the terminal capability information; an execution unit that sequentially executes the test cases; an identification unit that identifies a parameter condition in which an error occurs, from a set of test cases in which the error occurred among the executed test cases; and a management unit that excludes unexecuted test cases that meet the identified parameter condition from subsequent execution targets.
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: October 25, 2022
    Assignee: ANRITSU CORPORATION
    Inventors: Tsuyoshi Sato, Takuma Goto, Shunsuke Chino, Ryoji Yamamoto
  • Publication number: 20210337405
    Abstract: Provided is a mobile terminal test device 1 that tests a mobile communication terminal 2 by simulating a mobile communication base station, the mobile terminal test device including: an acquisition unit 141 that acquires terminal capability information, which is information related to a capability of the mobile communication terminal, by communicating with the mobile communication terminal; a generation unit 144 that generates a test case as a combination of parameter setting values set in test parameters based on the terminal capability information; an execution unit 132 that sequentially executes the test cases; an identification unit 136 that identifies a parameter condition in which an error occurs, from a set of test cases in which the error occurred among the executed test cases; and a management unit 134 that excludes unexecuted test cases that meet the identified parameter condition from subsequent execution targets.
    Type: Application
    Filed: April 6, 2021
    Publication date: October 28, 2021
    Inventors: Tsuyoshi SATO, Takuma GOTO, Shunsuke CHINO, Ryoji YAMAMOTO
  • Publication number: 20210321273
    Abstract: To provide a mobile communication terminal test device and a mobile terminal test method capable of easily generating test cases for a mobile communication terminal supporting 5G NR at low cost without omissions. Provided is a mobile terminal test device 1 that tests a mobile communication terminal 2 by simulating a mobile communication base station, the mobile terminal test device including: an acquisition unit (141) that acquires terminal capability information, which is information related to a capability of the mobile communication terminal, by communicating with the mobile communication terminal; an extraction unit (142) that extracts first capability information related to a first wireless communication method from the terminal capability information; and a generation unit (144) that generates a test case as a combination (210) of parameter setting values to be set in test parameters in the first wireless communication method, based on the first capability information.
    Type: Application
    Filed: April 1, 2021
    Publication date: October 14, 2021
    Inventors: Shunsuke CHINO, Tsuyoshi SATO, Takuma GOTO, Ryoji YAMAMOTO
  • Patent number: 8509784
    Abstract: A mobile communication method according to the present invention includes a step A of causing a mobile station in a standby mode in a first cell to transmit a communication start request signal, a step B of judging whether or not to measure communication quality of a second cell on the basis of judgment as to whether or not the particular service is provided in each of the cells and judgment as to whether or not communication quality of the second cell is included in the communication start request signal, the second cell overlaid by the first cell in a different frequency band and a step C of starting communication of the mobile station in either one of the first cell and the second cell on the basis of the measured communication quality of the second cell.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: August 13, 2013
    Assignee: NTT DoCoMo, Inc.
    Inventors: Masafumi Masuda, Yasuhiro Kawabe, Takaaki Sato, Ryoji Yamamoto, Katsuhiko Yamagata
  • Patent number: 8452282
    Abstract: A mobile communication method includes a mobile station transmitting a location registration request on the basis of a pilot signal, a network device judging, in response to the received location registration request, whether or not access to a specific radio base station from the mobile station is permitted, the network device rejecting location registration processing when the access is judged not to be permitted, and the network device making a determination so that the transmission power of the pilot signal in the specific radio base station is reduced when the number of rejections of location registration processing exceeds a predetermined number of times.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: May 28, 2013
    Assignee: NTT DoCoMo, Inc.
    Inventors: Masafumi Masuda, Kenichiro Aoyagi, Takaaki Sato, Ryoji Yamamoto
  • Publication number: 20110117913
    Abstract: A mobile communication method includes a mobile station transmitting a location registration request on the basis of a pilot signal, a network device judging, in response to the received location registration request, whether or not access to a specific radio base station from the mobile station is permitted, the network device rejecting location registration processing when the access is judged not to be permitted, and the network device making a determination so that the transmission power of the pilot signal in the specific radio base station is reduced when the number of rejections of location registration processing exceeds a predetermined number of times.
    Type: Application
    Filed: March 31, 2009
    Publication date: May 19, 2011
    Applicant: NTT DOCOMO, INC.
    Inventors: Masafumi Masuda, Kenichiro Aoyagi, Takaaki Sato, Ryoji Yamamoto
  • Publication number: 20100298002
    Abstract: A mobile communication method according to the present invention includes a step A of causing a mobile station in a standby mode in a first cell to transmit a communication start request signal, a step B of judging whether or not to measure communication quality of a second cell on the basis of judgment as to whether or not the particular service is provided in each of the cells and judgment as to whether or not communication quality of the second cell is included in the communication start request signal, the second cell overlaid by the first cell in a different frequency band and a step C of starting communication of the mobile station in either one of the first cell and the second cell on the basis of the measured communication quality of the second cell.
    Type: Application
    Filed: November 11, 2008
    Publication date: November 25, 2010
    Applicant: NTT DoCoMo, Inc.
    Inventors: Masafumi Masuda, Yasuhiro Kawabe, Takaaki Sato, Ryoji Yamamoto, Katsuhiko Yamagata
  • Patent number: 5585806
    Abstract: There is provided a flat antenna apparatus in which a low-noise amplifier provided therein does not generate an abnormal oscillation, and a case and a ground pattern formed on a circuit board are reliably connected to each other by means of a simple construction. A flat antenna element is mounted on a circuit board. The circuit board has an amplifying circuit for amplifying a radio frequency received from the flat antenna element. A case and the flat antenna element are attached to opposite sides of the circuit board. A tab formed on a peripheral edge of the case is inserted into a slot formed on the circuit board, the tab being soldered to fix the case on the circuit board.
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: December 17, 1996
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Toshikazu Ogino, Ryoji Yamamoto, Hideo Yajima
  • Patent number: 5548247
    Abstract: An amplifier includes: a FET having a source electrode, a drain electrode and a gate electrode, wherein an input signal input to the gate electrode is amplified by the FET and an output signal indicating the amplified input signal is output from the drain electrode; a first voltage biasing unit, coupled to the source electrode of the FET, for biasing the source electrode at a preset positive potential; and a second voltage biasing unit, coupled to the gate electrode of the FET, for biasing the gate electrode at a potential lower than the potential of the source electrode during the operation of the FET.
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: August 20, 1996
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Toshikazu Ogino, Ryoji Yamamoto
  • Patent number: 5356620
    Abstract: In preferred embodiments this invention provides a pharmaceutical composition and a method for the treatment of allergic conjunctivitis or allergic rhinitis. The composition is an aqueous solution containing N-(3,4-dimethoxycinnamoyl)anthranilic acid or a pharmaceutically acceptable salt thereof as an active ingredient. The composition additionally contains as essential components polyvinylpyrrolidone, a basic compound and a surface active agent in prescribed quantities, and the composition has a pH of about 6.5-8.5.
    Type: Grant
    Filed: April 3, 1991
    Date of Patent: October 18, 1994
    Assignees: Kissei Pharmaceutical Co. Ltd., Nitten Ophthalmic Research Institute Company
    Inventors: Tokihiko Yamamoto, Taihei Shibazaki, Yukiyoshi Ajisawa, Ryoji Yamamoto, Yukihiko Kinoshita
  • Patent number: 4832908
    Abstract: A novel low thermal expansion cast alloy is provided. The alloy consists of, by percents by weight, 0.02 to 0.25% of C, 30.5 to 33.3% of Ni, 4.0 to 6.0% of Co, 0.005 to 0.70% of Mn, 0.005-0.50% of Si and the balance substantially of Fe, with the proviso that % C.gtoreq.3.0285-0.0936 x % Ni (% C and % Ni are weight % of C and Ni). By such composition, micro-segregation of Ni can be reduced and the Ni content range showing the low thermal expansion coefficient can be broadened to an extent of substantially enabling mass production by a casting process in place of the conventional forging or rolling process. The average thermal expansion coefficient at the temperature range from - 50 to 120.degree. C. of the cast alloy is not more than 1.5.times.10.sup.-6 /.degree.C.
    Type: Grant
    Filed: February 19, 1988
    Date of Patent: May 23, 1989
    Assignees: NEC Corporation, Hitachi Metals Precision Ltd.
    Inventors: Katsuhisa Ishikawa, Ryoji Yamamoto, Takayuki Tsukahara
  • Patent number: 4780477
    Abstract: This invention provides novel isatin compounds which are useful as therapeutic agents. The invention isatin compounds and the pharmaceutically acceptable salts thereof exhibit anti-ulcer activities which are applicable for propylaxis and treatment of ulcer diseases in the digestive tract of animals.
    Type: Grant
    Filed: May 29, 1986
    Date of Patent: October 25, 1988
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Michihiro Kobayashi, Makio Kitazawa, Masuo Akahane, Tsutomu Tsukamoto, Ryoji Yamamoto, Yasushi Nakano
  • Patent number: 4623724
    Abstract: The present invention provides an improved method for producing a nuclear substituted cinnamoylanthranilic acid compound.Illustrative of the process is the reaction of 3,4-dimethoxybenzaldehyde with 2-carboxymalonanilic acid in an inert solvent medium in the presence of piperidine to provide an intermediate salt precipitate, and the salt is treated with an acidic reagent to yield N-(3,4-dimethoxycinnamoyl)anthranilic acid product.
    Type: Grant
    Filed: August 14, 1984
    Date of Patent: November 18, 1986
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Kinji Iizuka, Tetsuhide Kamijo, Ryoji Yamamoto, Hiromu Harada
  • Patent number: 4587356
    Abstract: The present invention provides an improved method for producing a nuclear substituted cinnamoylanthranilic acid compound.Illustrative of the process is the reaction of 3-hydroxy-4-methoxybenzaldehyde with 2-carboxymalonanilic acid in an inert solvent medium in the presence of a molar excess of piperidine to provide a high purity intermediate salt precipitate, and the salt is treated with an acidic reagent to yeild N-(3-hydroxy-4-methoxycinnamoyl)anthranilic acid product.
    Type: Grant
    Filed: September 25, 1984
    Date of Patent: May 6, 1986
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Kinji Iizuka, Tetsuhide Kamijo, Ryoji Yamamoto, Hiromu Harada
  • Patent number: 4486597
    Abstract: The present invention provides an improved method for producing a nuclear substituted cinnamoylanthranilic acid compound.Illustrative of the process is the reaction of 3,4-dimethoxybenzaldehyde with 2-carboxymalonanilic acid in an inert solvent medium in the presence of piperidine to provide an intermediate salt precipitate, and the salt is treated with an acidic reagent to yield N-(3,4-dimethoxycinnamoyl)anthranilic acid product.
    Type: Grant
    Filed: February 7, 1984
    Date of Patent: December 4, 1984
    Assignee: Kissei Pharmaceutical Co., Ltd.
    Inventors: Kinji Iizuka, Tetsuhide Kamino, Ryoji Yamamoto, Hiromu Harada
  • Patent number: 4469865
    Abstract: 1,3-Disubstituted imidazoles of the general formula (I): ##STR1## wherein A and B may be the same or different, and each is a straight- or branched-chain alkylene or alkenylene group having 1 to 8 carbon atoms, Y is an acyl group having 2 to 10 carbon atoms, an alkoxycarbonyl group having 2 to 7 carbon atoms or an dialkoxymethyl group having 3 to 13 carbon atoms, Z is a cyano group or an alkoxycarbonyl group having 2 to 7 carbon atoms, X is a halogen atom, n is zero or 1. The said compounds are intermediates for producing the imidazole derivatives of the general formula (V) above which possess strong and specific inhibitory effects on thromboxane synthetase and thus are useful as therapeutical agents for treatment of diseases caused by thromboxane A.sub.2.
    Type: Grant
    Filed: September 24, 1982
    Date of Patent: September 4, 1984
    Assignees: Kissei Pharmaceutical Co., Ltd., Ono Pharmaceutical Co., Ltd.
    Inventors: Kinji Iizuka, Tetsuhide Kamijo, Ryoji Yamamoto, Hiromu Harada
  • Patent number: RE49925
    Abstract: The present technology relates to a data processing device and a data processing method, which are capable of securing excellent communication quality in data transmission using an LDPC code. In group-wise interleave, an LDPC code in which a code length N is 16200 bits and an encoding rate r is 6/15, 8/15, or 10/15 is interleaved in units of bit groups of 360 bits. In group-wise deinterleave, a sequence of the LDPC code that has undergone the group-wise interleave is restored to an original sequence. For example, the present technology can be applied to a technique of performing data transmission using an LDPC code.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: April 16, 2024
    Assignee: Saturn Licensing LLC
    Inventors: Ryoji Ikegaya, Makiko Yamamoto, Yuji Shinohara