Patents by Inventor Yuji Nakayama

Yuji Nakayama 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: 20190040090
    Abstract: The purpose of the present invention is to provide an N,N-bis(2-dialkylphosphinoethyl)amine-borane complex which is a ruthenium complex that exhibits excellent catalytic activity in a hydrogenation reaction, etc., and a production method therefor, and a method for efficiently producing a ruthenium complex containing N,N-bis(2-dialkylphosphinoethyl)amine as a ligand. The present invention is capable of efficiently producing an amine-borane complex (3) by reacting an oxazolidinone compound (1) with a dialkylphosphine-borane compound (2) in the presence of a base. The present invention is also capable of efficiently producing a ruthenium complex (5) by reacting the amine-borane complex (3) with a ruthenium compound (4) in the presence of an amine. (In the formula, a solid line, a dashed line, B, C, H, L1-L3, LG, n, N, O, P, Ru, X, and R1-R10 are as defined in the description.
    Type: Application
    Filed: January 30, 2017
    Publication date: February 7, 2019
    Inventors: Yuji Nakayama, Hikaru Nakajima
  • Publication number: 20180273565
    Abstract: The present invention relates to a method for efficiently producing a ruthenium complex (1A) by reacting a dinuclear ruthenium complex (2A) with a compound (3A) in the presence of a primary alcohol and a base. The ruthenium complex (1A) can also be efficiently produced by treating a dinuclear ruthenium complex (4A) with a primary alcohol and a base. (In the formulas, solid lines, triple lines, broken lines, C, H, N, OP, Ru, X, AH and R1 to R12 have the meanings defined in the specification.
    Type: Application
    Filed: September 9, 2016
    Publication date: September 27, 2018
    Applicant: TAKASAGO INTERNATIONAL CORPORATION
    Inventor: Yuji NAKAYAMA
  • Patent number: 10072033
    Abstract: The purpose of the present invention is to provide: a ligand that is useful in a catalytic organic synthetic reaction; a method for producing said ligand; and a metal complex that is useful as a catalyst in an organic synthetic reaction. The present invention provides a compound represented by general formula (1A), a method for producing said compound, and a metal complex including said compound as a ligand. (In the formula, H, N, P, S, L, R1, R2, R3, Q1, and Q2 have the meaning as defined in the Description.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: September 11, 2018
    Assignee: TAKASAGO INTERNATIONAL CORPORATION
    Inventors: Yuji Nakayama, Osamu Ogata
  • Patent number: 10059729
    Abstract: The present invention provides a novel ruthenium complex that is easy to produce and handle and that can be supplied relatively inexpensively, a method for producing this ruthenium complex, a method for producing alcohols and the like using this ruthenium complex as a catalyst, a method for producing carbonyl compounds using this ruthenium complex as a catalyst, and a method for producing N-alkylamine compounds using this ruthenium complex as a catalyst. The present invention pertains to a ruthenium complex represented by general formula (1) RuX1X2(PNP) (NHC)m(Solv)n(1) (in general formula (1), X1 and X2 each independently represent a monovalent anionic monodentate ligand; PNP represents a tridentate aminodiphosphine ligand, NHC represents an N-heterocyclic carbene derived from a nitrogen-containing heterocyclic ring, and Solv represents a coordinating solvent; and m represents an integer from 1 to 3, n represents an integer from 0 to 2, and 1?m+n?3.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: August 28, 2018
    Assignee: Takasago International Corporation
    Inventors: Osamu Ogata, Hideki Nara, Yuji Nakayama
  • Publication number: 20170233418
    Abstract: The purpose of the present invention is to provide: a ligand that is useful in a catalytic organic synthetic reaction; a method for producing said ligand; and a metal complex that is useful as a catalyst in an organic synthetic reaction. The present invention provides a compound represented by general formula (1A), a method for producing said compound, and a metal complex including said compound as a ligand. (In the formula, H, N, P, S, L, R1, R2, R3, Q1, and Q2 have the meaning as defined in the Description.
    Type: Application
    Filed: August 26, 2015
    Publication date: August 17, 2017
    Applicant: TAKASAGO INTERNATIONAL CORPORATION
    Inventors: Yuji NAKAYAMA, Osamu OGATA
  • Publication number: 20170102628
    Abstract: Provided is a recorded material in which a recording liquid is satisfactorily fixed to a recording medium and which has a sufficient chroma and a sufficient lightness, in high-speed printing. The recorded material comprises a recording medium, a toner particle including colorant particles, and a cured resin including the toner particle and fixing a toner image formed of the toner particle onto the recording medium, wherein an average circularity of the toner particle is not less than 0.70 and not more than 0.99, the toner particle is not exposed from a surface of the cured resin, and an average distance between wall surfaces of the adjacent toner particles is not less than 10 nm and less than 125 nm.
    Type: Application
    Filed: December 21, 2016
    Publication date: April 13, 2017
    Inventors: Toru Kabashima, Shuhei Takahashi, Shuichi Tamura, Shinichirou Yoshikawa, Toshihiko Sugimoto, Erito Machida, Junji Ito, Jiro Ishizuka, Yuji Nakayama, Koji Amemiya
  • Publication number: 20170044196
    Abstract: The present invention provides a novel ruthenium complex that is easy to produce and handle and that can be supplied relatively inexpensively, a method for producing this ruthenium complex, a method for producing alcohols and the like using this ruthenium complex as a catalyst, a method for producing carbonyl compounds using this ruthenium complex as a catalyst, and a method for producing N-alkylamine compounds using this ruthenium complex as a catalyst. The present invention pertains to a ruthenium complex represented by general formula (1) RuX1X2(PNP) (NHC)m(Solv)n(1) (in general formula (1), X1 and X2 each independently represent a monovalent anionic monodentate ligand; PNP represents a tridentate aminodiphosphine ligand, NHC represents an N-heterocyclic carbene derived from a nitrogen-containing heterocyclic ring, and Solv represents a coordinating solvent; and m represents an integer from 1 to 3, n represents an integer from 0 to 2, and 1?m+n?3.
    Type: Application
    Filed: April 24, 2015
    Publication date: February 16, 2017
    Inventors: Osamu Ogata, Hideki Nara, Yuji Nakayama
  • Patent number: 9416148
    Abstract: The present invention provides a compound represented by general formula (1) and a transition metal complex containing the compound as a ligand: wherein R1 to R10, N, P, Y, and Z have the meanings as defined in DESCRIPTION.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: August 16, 2016
    Assignee: TAKASAGO INTERNATIONAL CORPORATION
    Inventors: Yuji Nakayama, Naota Yokoyama
  • Patent number: 9233922
    Abstract: The present invention provides a process for effectively producing an N-(hetero)arylazole with high yield, which is useful as a medical or agrochemical product, an organic photoconductor material, an organic electroluminescent element material, or the like. The present invention relates to a process for producing an N-(hetero)arylazole, which includes reacting a (hetero)aryl (pseudo)halide with an NH-azole in the presence of: a catalyst including a palladium compound and a coordination compound; and a basic magnesium compound.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: January 12, 2016
    Assignee: TAKASAGO INTERNATIONAL CORPORATION
    Inventors: Yuji Nakayama, Tohru Kobayashi
  • Publication number: 20150307531
    Abstract: The present invention provides a compound represented by general formula (1) and a transition metal complex containing the compound as a ligand: wherein R1 to R10, N, P, Y, and Z have the meanings as defined in DESCRIPTION.
    Type: Application
    Filed: March 4, 2015
    Publication date: October 29, 2015
    Applicant: TAKASAGO INTERNATIONAL CORPORATION
    Inventors: Yuji NAKAYAMA, Naota YOKOYAMA
  • Patent number: 9128393
    Abstract: Disclosed is a triphenylamine derivative represented by general formula (1): wherein R1, R2, R3, and R5 each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, or a substituted or unsubstituted phenyl group, R4 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted phenyl group, Ar represents a substituted or unsubstituted phenyl group, and m represents an integer of 1 to 3.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: September 8, 2015
    Assignee: TAKASAGO INTERNATIONAL CORPORATION
    Inventors: Junji Nakamura, Yuji Nakayama
  • Publication number: 20150065738
    Abstract: The present invention provides a phosphorous compound represented by general formula (1), and transition metal complexes containing such phosphorous compounds as ligands: wherein R1 to R7, A, B, Y, and Z have the same meanings as those defined in the specification.
    Type: Application
    Filed: August 22, 2014
    Publication date: March 5, 2015
    Applicant: TAKASAGO INTERNATIONAL CORPORATION
    Inventors: Naota YOKOYAMA, Yuji NAKAYAMA
  • Publication number: 20140371461
    Abstract: The present invention provides a process for effectively producing an N-(hetero)arylazole with high yield, which is useful as a medical or agrochemical product, an organic photoconductor material, an organic electroluminescent element material, or the like. The present invention relates to a process for producing an N-(hetero)arylazole, which includes reacting a (hetero)aryl (pseudo)halide with an NH-azole in the presence of: a catalyst including a palladium compound and a coordination compound; and a basic magnesium compound.
    Type: Application
    Filed: August 31, 2012
    Publication date: December 18, 2014
    Applicant: TAKASAGO INTERNATIONAL CORPORATION
    Inventors: Yuji Nakayama, Tohru Kobayashi
  • Publication number: 20140213822
    Abstract: Disclosed is a triphenylamine derivative represented by general formula (1): wherein R1, R2, R3, and R5 each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, or a substituted or unsubstituted phenyl group, R4 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted phenyl group, Ar represents a substituted or unsubstituted phenyl group, and m represents an integer of 1 to 3.
    Type: Application
    Filed: January 15, 2014
    Publication date: July 31, 2014
    Applicant: TAKASAGO INTERNATIONAL CORPORATION
    Inventors: Junji NAKAMURA, Yuji NAKAYAMA
  • Publication number: 20120167296
    Abstract: Provided is a urinal drain trap which is capable of preventing diffusion of odor for a long period of time. The urinal drain trap (10) is equipped with a lid (11) having an inlet (11A); a body (12) having an outlet (12C); and a tubular partition wall (13). The interior of the body (12) is divided into a first region (31) and a second region (32). The first region (31) and the second region (32) are linked with each other by a third region (33). Sealing liquid is injected into the first region (31), this sealing liquid being non-water-soluble, having a lower specific gravity than urine, and forming a sealing layer (S) at an elevation above retained urine. In a peripheral area of the lower end of the partition wall (13), there is formed a connecting portion (14) which extends laterally. In a peripheral area of the tip of the connecting portion (14), there is formed a folded portion (15) which extends upward.
    Type: Application
    Filed: September 24, 2010
    Publication date: July 5, 2012
    Applicant: LIXIL CORPORATION
    Inventors: Kazuteru Nomura, Satoshi Kitamura, Haruo Yamasaki, Akiko Kondo, Shuhei Handa, Yuji Nakayama, Kazuhisa Chaya
  • Patent number: 8000754
    Abstract: When telephone directory data is transmitted from a cellular phone to a vehicular handsfree apparatus, only a portion of the telephone directory data that reflects call history data of outbound calls or inbound calls is selectively transmitted, for use as the telephone directory data in the apparatus, in a manner that associates registration names used in the cellular phone with telephone numbers in the call history data transmitted from the cellular phone, instead of transmitting all of registered telephone directory data.
    Type: Grant
    Filed: October 27, 2008
    Date of Patent: August 16, 2011
    Assignee: Denso Corporation
    Inventors: Yuji Nakayama, Kenji Miyake, Yuji Shinkai
  • Publication number: 20090111530
    Abstract: When telephone directory data is transmitted from a cellular phone to a vehicular handsfree apparatus, only a portion of the telephone directory data that reflects call history data of outbound calls or inbound calls is selectively transmitted, for use as the telephone directory data in the apparatus, in a manner that associates registration names used in the cellular phone with telephone numbers in the call history data transmitted from the cellular phone, instead of transmitting all of registered telephone directory data.
    Type: Application
    Filed: October 27, 2008
    Publication date: April 30, 2009
    Applicant: DENSO CORPORATION
    Inventors: Yuji Nakayama, Kenji Miyake, Yuji Shinkai
  • Patent number: 7442797
    Abstract: Provision of a novel platinum complex which is useful as a material for a light-emitting device of good light emission characteristic and light emission efficiency, and a novel light-emitting material that may be utilized in various fields. A platinum complex represented by the following general formula (1): (in which two rings of ring A, ring B, ring C, and ring D represent nitrogen-containing heterocyclic rings which may have a substituent and the remaining two rings of them represent aryl rings or hetero aryl rings which may have a substituent, the ring A and the ring B, the ring A and the ring C or/and the ring B and the rind D may form condensed rings. Two of X1, X2, X3, and X4 represent nitrogen atoms coordination bonded to a platinum atom and the remaining two of them represent carbon atoms or nitrogen atoms.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: October 28, 2008
    Assignee: Takasago International Corporation
    Inventors: Hisanori Itoh, Yuji Nakayama, Takeshi Iwata, Yoshimasa Matsushima, Yoji Hori
  • Patent number: 7292824
    Abstract: A reception side radio station has a notification signal generator 108 which transmits a notification signal for notifying information of a frequency of a radio link being used at the radio station, and a transmitter 111 which transmits information indicating a reception power level and its frequency as radio signal data. On the other hand, a transmission side radio station has a notification signal measurer 106 which measures a reception power level of the notification signal and detects the frequency notified by the signal, and a frequency band controller 109 which determines an assignable frequency band for a radio link between the transmission side radio station and the reception side radio station based on the radio signal data and the notification signal.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: November 6, 2007
    Assignee: NTT DoCoMo, Inc.
    Inventors: Koichiro Yamaguchi, Yuji Aburakawa, Yuji Nakayama, Toru Otsu
  • Patent number: 7254364
    Abstract: An image forming apparatus includes an image bearing member on which a toner image is formed and a blade retained so as to be capable of coming into contact with and separating from the image bearing member and adapted, when in contact with the image bearing member, to remove residual toner remaining on the image bearing member after image transfer, the blade being brought into contact with or separated from the image bearing member during movement of the image bearing member, wherein the blade includes an edge portion to be brought into contact with the image bearing member and a support portion causing the edge portion to come into contact with the image bearing member, and wherein the hardness of the edge portion is higher than the hardness of the support portion, the hardness of the edge portion being not less than 75 degrees but not more than 100 degrees (JIS-A), the hardness of the support portion being not less than 60 degrees but not more than 85 degrees (JIS-A).
    Type: Grant
    Filed: May 24, 2004
    Date of Patent: August 7, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuji Nakayama