Patents by Inventor Kei Yoshida

Kei Yoshida 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: 20130306962
    Abstract: The OLEDs of the present invention are characterized by providing an organic thin film layer comprising a single layer or plural layers between a cathode and an anode, wherein the organic thin film layer comprises at least one organic light emitting layer, wherein at least one light emitting layer comprises at least one host material and at least one phosphorescent emitter material, wherein the host material comprises a substituted or unsubstituted hydrocarbon compound represented by the formula (1) or (2): (Cz-)nA??(1) Cz(-A)m??(2) wherein Cz represents a substituted or unsubstituted arylcarbazolyl group or carbazolylalkylene group, A represents a group represented by the following general formula (3): (M)p-(L)q-(M?)r??(3) wherein M and M? each independently represent a heteroaromatic ring having 2 to 40 carbon atoms and nitrogen atom and forming a substituted or unsubstituted ring, M and M? may represent a same ring or different rings, L represents a single bond, a substituted or unsubstituted aryl
    Type: Application
    Filed: February 11, 2011
    Publication date: November 21, 2013
    Applicant: Universal Display Corporation
    Inventors: Hitoshi Yamamoto, Michael S. Weaver, Julia J. Brown, Kazuki Nishimura, Toshihiro Iwakuma, Kei Yoshida
  • Patent number: 8563736
    Abstract: A compound represented by Formula (1): The compound can be used as insecticides.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: October 22, 2013
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Kei Yoshida, Takeo Wakita, Hiroyuki Katsuta, Akiyoshi Kai, Yutaka Chiba, Kiyoshi Takahashi, Hiroko Kato, Nobuyuki Kawahara, Michikazu Nomura, Hidenori Daido, Junji Maki, Shinichi Banba
  • Publication number: 20130075958
    Abstract: The present invention provides a process for producing a thermoplastic resin foam excellent in strength, flexibility, cushioning properties, strain recovery, and appearance, and exhibiting little shrinkage of the cell structure under a high temperature condition and a high expansion ratio. The process includes a foamed structure formation step of foam molding a thermoplastic resin composition containing a thermoplastic elastomer and an active energy-ray curable compound to thereby obtain a foamed structure; a foamed structure conveyance step of continuously conveying the foamed structure by a carrier sheet having a surface roughness (Ra) of 1 ?m or larger and a tensile break strength of 30 N/15 mm or higher, after the foamed structure formation step; and an active energy-ray irradiation step of irradiating the foamed structure with an active energy ray to thereby form a crosslinked structure by the active energy-ray curable compound in the foamed structure.
    Type: Application
    Filed: September 13, 2012
    Publication date: March 28, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Mitsuhiro KANADA, Yoshinori KOUNO, Mie OTA, Hironori YASUDA, Kei YOSHIDA, Yuko KANDORI
  • Publication number: 20130062597
    Abstract: A nitrogen-containing heteroaromatic compound is represented by the following formula (A). wherein Y is an oxygen atom or a sulfur atom, M is a substituted or unsubstituted nitrogen-containing heteroaromatic group, and Ar2 is a substituted aromatic hydrocarbon group having 6 to 18 ring carbon atoms, a substituted or unsubstituted monocyclic heteroaromatic group having 5 or 6 ring atoms, a dibenzofuran ring group that may be substituted with a substituent (excluding a 3-carbazolyl group and an N-carbazolyl group), a dibenzothiophene ring group that may be substituted with a substituent (excluding a 3-carbazolyl group and an N-carbazolyl group), or a nitrogen-containing polycyclic group among nitrogen-containing polycyclic groups respectively represented by the following formulas (1) to (5).
    Type: Application
    Filed: September 7, 2012
    Publication date: March 14, 2013
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Kei YOSHIDA, Ryohei Hashimoto
  • Publication number: 20130066114
    Abstract: Aniline derivatives represented by formula (8): The aniline derivatives can be used as insecticides and/or intermediates in production of insecticides.
    Type: Application
    Filed: September 13, 2012
    Publication date: March 14, 2013
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kei YOSHIDA, Takeo WAKITA, Hiroyuki KATSUTA, Akiyoshi KAI, Yutaka CHIBA, Kiyoshi TAKAHASHI, Hiroko KATO, Nobuyuki KAWAHARA, Michikazu NOMURA, Hidenori DAIDO, Junji MAKI, Shinichi BANBA, Atsuko KAWAHARA
  • Patent number: 8318323
    Abstract: Provided are a polycyclic compound of a compound having such a structure that two benzene rings bond to a central benzene ring each other to form a fused ring and another fused ring bonds to a terminal thereof, and an organic electroluminescence device including one or more organic thin film layers containing a light emitting layer between a cathode and an anode, in which at least one of the organic thin film layers includes the polycyclic compound of the present invention. The organic electroluminescence device has high luminous efficiency, no defect in pixels, and long lifetime. In addition, provided is a polycyclic compound realizing the organic electroluminescence device.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: November 27, 2012
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Tomoki Kato, Masaki Numata, Kazuki Nishimura, Toshihiro Iwakuma, Chishio Hosokawa, Kei Yoshida
  • Publication number: 20120225891
    Abstract: A compound represented by Formula (1): The compound can be used as insecticides.
    Type: Application
    Filed: March 22, 2012
    Publication date: September 6, 2012
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kei Yoshida, Takeo Wakita, Hiroyuki Katsuta, Akiyoshi Kai, Yutaka Chiba, Kiyoshi Takahashi, Hiroko Kato, Nobuyuki Kawahara, Michikazu Nomura, Hidenori Daido, Junji Maki, Shinichi Banba
  • Publication number: 20120220802
    Abstract: Aniline derivatives represented by formula (8) and formula (9): The aniline derivatives can be used as insecticides.
    Type: Application
    Filed: March 13, 2012
    Publication date: August 30, 2012
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kei Yoshida, Takeo Wakita, Hiroyuki Katsuta, Akiyoshi Kai, Yutaka Chiba, Kiyoshi Takahashi, Hiroko Kato, Nobuyuki Kawahara, Michikazu Nomura, Hidenori Daido, Junji Maki, Shinichi Banba, Atsuko Kawahara
  • Publication number: 20120138911
    Abstract: A biscarbazole derivative of the invention is represented by a formula (1A) or (1B) below. In the formula (1A) or (1B): A1 represents a substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; A2 represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; X1 and X2 each are a linking group; Y1 to Y4 each represent a substituent; p and q represent an integer of 1 to 4; and r and s represent an integer of 1 to 3.
    Type: Application
    Filed: February 14, 2012
    Publication date: June 7, 2012
    Inventors: Tetsuya Inoue, Mitsunori Ito, Kei Yoshida, Kumiko Hibino, Kazuki Nishimura, Toshinari Ogiwara, Kiyoshi Ikeda
  • Publication number: 20120138912
    Abstract: A biscarbazole derivative of the invention is represented by a formula (1) below. In the formula (1): A1 represents a substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; A2 represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; X1 and X2 each are a linking group; Y1 to Y4 each represent a substituent; p and q represent an integer of 1 to 4; and r and s represent an integer of 1 to 3.
    Type: Application
    Filed: February 14, 2012
    Publication date: June 7, 2012
    Inventors: Tetsuya Inoue, Mitsunori Ito, Kei Yoshida, Kumiko Hibino, Kazuki Nishimura, Toshinari Ogiwara, Kiyoshi Ikeda
  • Publication number: 20120138915
    Abstract: An organic electroluminescence device includes an anode, a cathode, and an organic thin-film layer interposed between the anode and the cathode, in which the organic thin-film layer includes an emitting layer at least containing a first host, a second host and a luminous dopant, the first host is a compound having one or more carbazolyl groups and one or more nitrogen-containing heterocyclic groups in a molecule, and the second host is a compound represented by the following formula (1) or (2).
    Type: Application
    Filed: July 25, 2011
    Publication date: June 7, 2012
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Kazuki Nishimura, Mitsunori Ito, Kumiko Hibino, Kei Yoshida
  • Publication number: 20120126217
    Abstract: A fluorene-containing aromatic compound represented by a formula (1) below. In the formula (1): Nr1 represents a substituted or unsubstituted monocyclic nitrogen-containing aromatic ring having 2 to 5 ring carbon atoms, or a bicyclic nitrogen-containing aromatic ring having 2 to 9 ring carbon atoms; Ar represents an aromatic ring and the like; Fl1 and Fl2 represent a fluorenyl group; and Cz1 and Cz2 represent a carbazolyl group. A compound represented by a formula (2) below is omitted from the fluorene-containing aromatic compound represented by the formula (1).
    Type: Application
    Filed: October 14, 2010
    Publication date: May 24, 2012
    Applicant: IDEMITSU KOSAN CO. LTD.
    Inventors: Kei Yoshida, Kazuki Nishimura, Mitsunori Ito, Yuichiro Kawamura, Toshinari Ogiwara, Toshihiro Iwakuma
  • Patent number: 8168825
    Abstract: An object of the present invention is to provide a compound represented by Formula (1): wherein A1, A2, A3 and A4 each represent a carbon atom, a nitrogen atom or an oxidized nitrogen atom; R1 and R2 each represent a hydrogen atom, an optionally substituted alkyl group or an optionally substituted C1-C4 alkylcarbonyl group; G1 and G2 each represent an oxygen atom or a sulfur atom; X, which may be identical or different each other, represents a hydrogen atom, a halogen atom, a C1-C3 alkyl group or a trifluoromethyl group; n is an integer of 0 to 4; and Q1 represents an optionally substituted phenyl group, an optionally substituted naphthyl group or an optionally substituted heterocyclic group; Q2 represents a phenyl group or heterocyclic group having one or more substituents, at least one of the substituent being any of a C1-C4 haloalkoxy group, a C2-C6 perfluoroalkyl group, a C1-C6 perfluoroalkylthio group, a C1-C6 perfluoroalkylsulfinyl group and a C1-C6 perfluoroalkylsulfonyl group, an insecticide com
    Type: Grant
    Filed: December 24, 2004
    Date of Patent: May 1, 2012
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Kei Yoshida, Takeo Wakita, Hiroyuki Katsuta, Akiyoshi Kai, Yutaka Chiba, Kiyoshi Takahashi, Hiroko Kato, Nobuyuki Kawahara, Michikazu Nomura, Hidenori Daido, Junji Maki, Shinichi Banba
  • Patent number: 8158814
    Abstract: An object of the present invention is to provide insecticides having high effectiveness.
    Type: Grant
    Filed: August 23, 2004
    Date of Patent: April 17, 2012
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Kei Yoshida, Takeo Wakita, Hiroyuki Katsuta, Akiyoshi Kai, Yutaka Chiba, Kiyoshi Takahashi, Hiroko Kato, Nobuyuki Kawahara, Michikazu Nomura, Hidenori Daido, Junji Maki, Shinichi Banba, Atsuko Kawahara
  • Publication number: 20110291081
    Abstract: An organic EL device material includes at least a unit including 3,5-biscarbazolylphenyl group, a unit including 4-carbazolylphenyl group, and a compound including a unit including a nitrogen-containing aromatic heterocyclic ring bonding the unit including 3,5-biscarbazolylphenyl group and the unit including 4-carbazolylphenyl group.
    Type: Application
    Filed: March 4, 2011
    Publication date: December 1, 2011
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Tetsuya Inoue, Kumiko Hibino, Kei Yoshida, Kazuki Nishimura, Toshihiro Iwakuma
  • Patent number: 8067638
    Abstract: The present invention is to provide a compound represented by the general formula (1) exhibiting a high insecticidal effect and an insecticide comprising the compound as an active ingredient. The compound represented by the general formula (1) and an insecticide comprising the compound as an active ingredient, wherein, in the formula, A1, A2, A3 and A4 each represent a carbon atom or the like; R1 and R2 each represent a hydrogen atom or the like; G1 and G2 represent an oxygen atom or the like; Xs each represent a hydrogen atom, a halogen atom or the like; n represents an integer of 0 to 4; Q1 represents a substituted phenyl group, a substituted heterocyclic group or the like; Q2 represents a substituted phenyl group, a substituted heterocyclic group or the like.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: November 29, 2011
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Akiyoshi Kai, Takeo Wakita, Hiroyuki Katsuta, Kei Yoshida, Hidetaka Tsukada, Yusuke Takahashi, Nobuyuki Kawahara, Michikazu Nomura, Hidenori Daido
  • Publication number: 20110279020
    Abstract: A biscarbazole derivative of the invention is represented by a formula (1) below. In the formula (1): A1 represents a substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; A2 represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; X1 and X2 each are a linking group; Y1 to Y4 each represent a substituent; p and q represent an integer of 1 to 4; and r and s represent an integer of 1 to 3.
    Type: Application
    Filed: April 20, 2011
    Publication date: November 17, 2011
    Inventors: Tetsuya INOUE, Mitsunori ITO, Kei YOSHIDA, Kumiko HIBINO, Kazuki NISHIMURA, Toshinari OGIWARA, Kiyoshi IKEDA
  • Publication number: 20110278555
    Abstract: A biscarbazole derivative of the invention is represented by a formula (1A) or (1B) below. In the formula (1A) or (1B): A1 represents a substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; A2 represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; X1 and X2 each are a linking group; Y1 to Y4 each represent a substituent; p and q represent an integer of 1 to 4; and r and s represent an integer of 1 to 3.
    Type: Application
    Filed: April 20, 2011
    Publication date: November 17, 2011
    Inventors: Tetsuya INOUE, Mitsunori ITO, Kei YOSHIDA, Kumiko HIBINO, Kazuki NISHIMURA, Toshinari OGIWARA, Kiyoshi IKEDA
  • Publication number: 20100012931
    Abstract: Provided are a polycyclic compound of a compound having such a structure that two benzene rings bond to a central benzene ring each other to form a fused ring and another fused ring bonds to a terminal thereof, and an organic electroluminescence device including one or more organic thin film layers containing a light emitting layer between a cathode and an anode, in which at least one of the organic thin film layers includes the polycyclic compound of the present invention. The organic electroluminescence device has high luminous efficiency, no defect in pixels, and long lifetime. In addition, provided is a polycyclic compound realizing the organic electroluminescence device.
    Type: Application
    Filed: September 2, 2009
    Publication date: January 21, 2010
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Tomoki KATO, Masaki Numata, Kazuki Nishimura, Toshihiro Iwakuma, Chishio Hosokawa, Kei Yoshida
  • Patent number: D615854
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: May 18, 2010
    Assignee: YKK Corporation
    Inventors: Kei Yoshida, Kenichi Yoshie