Patents by Inventor Akimasa Nakamura

Akimasa Nakamura 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: 9856382
    Abstract: A homogeneous coating solution for forming a light-absorbing layer of a solar cell, the homogeneous solution including: at least one metal or metal compound selected from the group consisting of a group 11 metal, a group 13 metal, a group 11 metal compound and a group 13 metal compound; a Lewis base solvent; and a Lewis acid.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: January 2, 2018
    Assignee: TOKYO OHKA KOGYO CO. LTD.
    Inventors: Yueh Chun Liao, Takuya Ohhashi, Hiroyuki Iida, Akimasa Nakamura
  • Publication number: 20170306169
    Abstract: A homogeneous coating solution for forming a light-absorbing layer of a solar cell, the homogeneous solution including: at least one metal or metal compound selected from the group consisting of a group 11 metal, a group 13 metal, a group 11 metal compound and a group 13 metal compound; a Lewis base solvent; and a Lewis acid.
    Type: Application
    Filed: October 27, 2015
    Publication date: October 26, 2017
    Inventors: Yueh Chun LIAO, Takuya OHHASHI, Hiroyuki IIDA, Akimasa NAKAMURA
  • Publication number: 20170018369
    Abstract: First, there is provided a crystal growth control agent which is capable of suppressing an increase in a crystal size of a p-type semiconductor, and performing chemical modification on a surface of p-type semiconductor microparticle. Second, there is provided a composition for forming a hole transport layer which is capable of prompting crystallization and fine pulverization of the p-type semiconductor and performing the chemical modification on the surface of the p-type semiconductor microparticle even in the case where an organic salt (an ionic liquid) containing an anion other than the thiocyanate ion is used. According to the present invention, the crystal growth control agent contains at least one of sulfur-containing compounds (except for thiocyanate) selected from the group consisting of a compound, which generates a thiolate anion due to dissociation of a proton or a cation, and a disulfide compound, and controls crystal growth of a p-type semiconductor.
    Type: Application
    Filed: March 10, 2015
    Publication date: January 19, 2017
    Applicant: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Akimasa NAKAMURA, Atsushi YAMANOUCHI, Takahiro ASAI, Kaoru ISHIKAWA
  • Patent number: 8999746
    Abstract: A method of producing a metal chalcogenide dispersion usable in forming a light absorbing layer of a solar cell, the method including: a metal chalcogenide nano particle formation step in which at least one metal or metal compound selected from the group consisting of a group 11, 12, 13, 14 or 15 metal or metal compound, a water-containing solvent and a group 16 element-containing compound are mixed together to obtain metal chalcogenide nano particles; and an addition step in which a compound (1) represented by general formula (1) is added to the metal chalcogenide nano particles, thereby obtaining a metal chalcogenide dispersion (wherein R1 to R4 each independently represents an alkyl group, an aryl group or a hydrogen atom; provided that at least one of R1 to R4 represents a hydrocarbon group).
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: April 7, 2015
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Atsushi Yamanouchi, Koichi Misumi, Akimasa Nakamura
  • Publication number: 20150044813
    Abstract: A method of producing a metal chalcogenide dispersion usable in forming a light absorbing layer of a solar cell, the method including: a metal chalcogenide nano particle formation step in which at least one metal or metal compound selected from the group consisting of a group 11, 12, 13, 14 or 15 metal or metal compound, a water-containing solvent and a group 16 element-containing compound are mixed together to obtain metal chalcogenide nano particles; and an addition step in which a compound (1) represented by general formula (1) is added to the metal chalcogenide nano particles, thereby obtaining a metal chalcogenide dispersion (wherein R1 to R4 each independently represents an alkyl group, an aryl group or a hydrogen atom; provided that at least one of R1 to R4 represents a hydrocarbon group).
    Type: Application
    Filed: August 8, 2013
    Publication date: February 12, 2015
    Applicant: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Atsushi Yamanouchi, Koichi Misumi, Akimasa Nakamura
  • Patent number: 8445118
    Abstract: A coating liquid including one or more of metal complexes selected from a metal complex A represented by Chemical Formula 1, a metal complex B represented by Chemical Formula 2, and a metal complex C represented by Chemical Formula 3. M in Formula 1, 2 and 3 represents a metal ion. Each of X1-X4 in Formula 1, 2 and 3 is one of O, NH, CO2 and S. Each of Y1-Y8 in Formula 1 and Y1-Y4 in Formula 3 is either CH or N. Each of Z1-Z3 in Formula 2 and 3 and Z4-Z6 in Formula 2 is one selected from a group of O, NH and S, and two selected from a group of CH and N. L represents an axial ligand. k represents a valence of each of the metal complexes and is equal to a sum of electric charges of M, X1-X4 and L.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: May 21, 2013
    Assignee: Central Japan Railway Company
    Inventors: Christopher Cordonier, Tetsuya Shichi, Takafumi Numata, Kenichi Katsumata, Akimasa Nakamura, Yasuhiro Katsumata, Teruo Komine, Kenichirou Amemiya, Akira Fujishima, Makoto Yamashita
  • Patent number: 8426107
    Abstract: Disclosed is a positive-type photosensitive composition which can form a metal compound film pattern at high resolution and with less affection by organic residues. The positive-type photosensitive composition comprises: a metal complex component (A) which can form a metal compound film when applied and subsequently fired; and a photosensitizing agent (B). In the composition, a ligand in the component (A) is preferably a multidentate ligand having an aromatic compound as its skeleton. According to this construction, even a composition containing substantially no photosensitive resin can impart photosensitivity and a metal compound film pattern can be formed readily.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: April 23, 2013
    Assignees: Tokyo Ohka Kogyo Co., Ltd., Central Japan Railway Company
    Inventors: Motoki Takahashi, Toshiyuki Ogata, Christopher Cordonier, Akimasa Nakamura, Tetsuya Shichi, Teruhiro Uematsu
  • Patent number: 8003219
    Abstract: The present invention provides a technology related to a conductive film which is high in transparency, conductivity, and adhesiveness to a base plate. The present invention also provides a coating liquid including metal materials reacting with a ligand represented by a particular Chemical Formula and including indium (In), tin (Sn), or both thereof.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: August 23, 2011
    Assignee: Central Japan Railway Company
    Inventors: Christopher Cordonier, Tetsuya Shichi, Takafumi Numata, Kenichi Katsumata, Akimasa Nakamura, Yasuhiro Katsumata, Teruo Komine, Kenichirou Amemiya, Makoto Yamashita, Akira Fujishima
  • Patent number: 7993753
    Abstract: The present invention provides a coating liquid including organic metal complexes represented by Chemical Formula 1. R1-R8 in Chemical Formula 1 is one of the followings (1)-(4): (1) a group represented by CnH2n+1 (aforementioned n is an integral number equal to or larger than 0); (2) a group represented by COOR9 (aforementioned R9 is a group represented by CmH2m+1, and aforementioned m is an integral number equal to or larger than 0); (3) a halogen atom; and (4) CN or NO2.
    Type: Grant
    Filed: December 25, 2006
    Date of Patent: August 9, 2011
    Assignee: Central Japan Railway Company
    Inventors: Christopher Cordonier, Tetsuya Shichi, Takafumi Numata, Kenichi Katsumata, Akimasa Nakamura, Yasuhiro Katsumata, Teruo Komine, Kenichirou Amemiya, Akira Fujishima
  • Patent number: 7964283
    Abstract: The present invention provides a coating liquid including organic metal complexes represented by Chemical Formula 1. R1-R8 in Chemical Formula 1 is one of the followings (1)-(4): (1) a group represented by CnH2n+1 (aforementioned n is an integral number equal to or larger than 0); (2) a group represented by COOR9 (aforementioned R9 is a group represented by CmH2m+1, and aforementioned m is an integral number equal to or larger than 0); (3) a halogen atom; and (4) CN or NO2.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: June 21, 2011
    Assignee: Central Japan Railway Company
    Inventors: Christopher Cordonier, Tetsuya Shichi, Takafumi Numata, Kenichi Katsumata, Akimasa Nakamura, Yasuhiro Katsumata, Teruo Komine, Kenichirou Amemiya, Akira Fujishima
  • Publication number: 20110064913
    Abstract: Disclosed is a positive-type photosensitive composition which can form a metal compound film pattern at high resolution and with less affection by organic residues. The positive-type photosensitive composition comprises: a metal complex component (A) which can form a metal compound film when applied and subsequently fired; and a photosensitizing agent (B). In the composition, a ligand in the component (A) is preferably a multidentate ligand having an aromatic compound as its skeleton. According to this construction, even a composition containing substantially no photosensitive resin can impart photosensitivity and a metal compound film pattern can be formed readily.
    Type: Application
    Filed: May 13, 2009
    Publication date: March 17, 2011
    Applicants: TOKYO OHKA KOGYO CO., LTD, CENTRAL JAPAN RAILWAY COMPANY
    Inventors: Motoki Takahashi, Toshiyuki Ogata, Christopher Cordonier, Akimasa Nakamura, Tetsuya Shichi, Teruhiro Uematsu
  • Publication number: 20100062281
    Abstract: The present invention provides a technology related to a conductive film which is high in transparency, conductivity, and adhesiveness to a base plate. The present invention also provides a coating liquid including metal materials reacting with a ligand represented by Chemical Formula 1 and including indium (In), tin (Sn), or both thereof. Each of R21—R24 in the Chemical Formula 1 is one of the followings (1)-(11) and X11 and X12 is either hetero atoms or carboxylic acid.
    Type: Application
    Filed: January 31, 2007
    Publication date: March 11, 2010
    Applicant: Central Japan Railway Company
    Inventors: Christopher Cordonier, Tetsuya Shichi, Takafumi Numata, Kenichi Katsumata, Akimasa Nakamura, Yasuhiro Katsumata, Teruo Komine, Kenichirou Amemiya, Makoto Yamashita, Akira Fujishima
  • Publication number: 20090324963
    Abstract: A coating liquid including one or more of metal complexes selected from a metal complex A represented by Chemical Formula 1, a metal complex B represented by Chemical Formula 2, and a metal complex C represented by Chemical Formula 3. M in Chemical Formula 1, Chemical Formula 2 and Chemical Formula 3 represents a metal ion. Each of X1-X4 in Chemical Formula 1, Chemical Formula 2 and Chemical Formula 3 is one of O, NH, CO2 and S. Each of Y1-Y8 in Chemical Formula 1 and Y1-Y4 in Chemical Formula 3 is either CH or N. Each of Z1-Z3 in Chemical Formula 2 and Chemical Formula 3 and Z4-Z6 in Chemical Formula 2 is one selected from a group of O, NH and S, and two selected from a group of CH and N. L in Chemical Formula 1, Chemical Formula 2 and Chemical Formula 3 represents an axial ligand. k in Chemical Formula 1, Chemical Formula 2 and Chemical Formula 3 represents a valence of each of the metal complexes and is equal to a sum of electric charges of M, X1-X4 and L.
    Type: Application
    Filed: July 12, 2007
    Publication date: December 31, 2009
    Applicant: CENTRAL JAPAN RAILWAY COMPANY
    Inventors: Christopher Cordonier, Tetsuya Shichi, Takafumi Numata, Kenichi Katsumata, Akimasa Nakamura, Yasuhiro Katsumata, Teruo Komine, Kenichirou Amemiya, Akira Fujishima, Makoto Yamashita
  • Publication number: 20090169899
    Abstract: The present invention provides a coating liquid including organic metal complexes represented by Chemical Formula 1. R1-R8 in Chemical Formula 1 is one of the followings (1)-(4): (1) a group represented by CnH2n+1 (aforementioned n is an integral number equal to or larger than 0); (2) a group represented by COOR9 (aforementioned R9 is a group represented by CmH2m+1, and aforementioned m is an integral number equal to or larger than 0); (3) a halogen atom; and (4) CN or NO2.
    Type: Application
    Filed: December 15, 2006
    Publication date: July 2, 2009
    Applicant: Central Japan Railway Company
    Inventors: Christopher Cordonier, Tetsuya Shichi, Takafumi Numata, Kenichi Katsumata, Akimasa Nakamura, Yasuhiro Katsumata, Teruo Komine, Kenichirou Amemiya, Akira Fujishima
  • Publication number: 20090075094
    Abstract: The present invention provides a coating liquid including organic metal complexes represented by Chemical Formula 1. R1—R8 in Chemical Formula 1 is one of the followings (1)-(4): (1) a group represented by CnH2n+1 (aforementioned n is an integral number equal to or larger than 0); (2) a group represented by COOR9 (aforementioned R9 is a group represented by CmH2m+1, and aforementioned m is an integral number equal to or larger than 0); (3) a halogen atom; and (4) CN or NO2.
    Type: Application
    Filed: December 25, 2006
    Publication date: March 19, 2009
    Inventors: Christopher Cordonier, Tetsuya Shichi, Takafumi Numata, Kenichi Katsumata, Akimasa Nakamura, Yasuhiro Katsumata, Teruo Komine, Kenichirou Amemiya, Akira Fujishima
  • Patent number: 5111686
    Abstract: A diagnosis apparatus adapted to be mounted on a vehicle, which stores conditions of abnormality of an electronic control apparatus for controlling the vehice and diagnoses a fault in the apparatus, comprising operating condition detecting element for detecting the condition of the vehicle operation, abnormal condition memory element storing an occurrence of an abnormal condition of the vehicle, vehicle operating condition memory element for storing the operating conditions when an abnormal condition occurs in the vehicle, reproduction mode instruction element for instructing to execute abnormal condition reproduction test mode, operating condition comparison element for comparing the current vehicle operating conditions with the vehicle operating conditions at the time of abnormality occurrence in the abnormal condition reproduction mode set by the instruction element, and notifying element for notifying a result of the above-mentioned comparison of vehicle operating conditions.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: May 12, 1992
    Assignee: Nippondenso Co., Ltd.
    Inventors: Kenji Kamiya, Hiroyuki Ina, Akimasa Nakamura, Masakazu Honda
  • Patent number: D959017
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: July 26, 2022
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Takashi Ohsaka, Akimasa Nakamura