Patents by Inventor Takayuki Iijima

Takayuki Iijima 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: 10651395
    Abstract: The purpose of the present invention is to provide an organic electroluminescent element having improved luminous efficiency and stability under high-temperature storage. The present invention is an organic electroluminescent element that has an anode, a cathode, and at least one light-emitting layer sandwiched between the anode and the cathode, and is characterized in that at least one of the light-emitting layers contains a ?-conjugated boron compound having a structure represented by general formula (1). (In general formula (1), X1 to X9 each independently represents —CR or a nitrogen atom, R represents a hydrogen atom or a substituent, and Y1 to Y3 each independently represents an oxygen atom or a sulfur atom).
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: May 12, 2020
    Assignee: KONICA MINOLTA, INC.
    Inventors: Takayuki Iijima, Hiroshi Kita
  • Publication number: 20200140394
    Abstract: A compound represented by the formula (1) is provided: wherein A1 represents an oxygen atom, a sulfur atom, —NR5— or —PR5—; at least one A1 is —NR5— or —PR5—; R1 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxy group, a cycloalkoxy group, an aryloxy group, an alkylsulfenyl group, a cycloalkylsulfenyl group, an arylsulfenyl group or a disubstituted amino group; R2 and R3 represent an alkyl group, a cycloalkyl group, an aryl group, an alkoxy group, a cycloalkoxy group, an aryloxy group, an alkylsulfenyl group, a cycloalkylsulfenyl group, an arylsulfenyl group, a monovalent heterocyclic group, a halogen atom or a disubstituted amino group; R4 represents a hydrogen atom, —C(R6)3, —OR7, —N(R7)2 or —Si(R7)3; m represents an integer of 0 to 3; and n represents an integer of 0 to 4.
    Type: Application
    Filed: March 21, 2017
    Publication date: May 7, 2020
    Applicants: Sumitomo Chemical Company, Limited, Cambridge Display Technology Limited
    Inventors: Satoshi KOBAYASHI, Takayuki IIJIMA, Nobuhiko AKINO, Sheena ZUBERI
  • Patent number: 10573475
    Abstract: According to an embodiment, a gas-blast circuit breaker comprises a heat removal unit in a flow path of arc extinguishing gas. The heat removal unit each includes: plate-shaped heat removal members contacting the arc extinguishing gas flowing in the flow path; and a holding portion holding the plate-shaped heat removal members to stack the heat removal members at intervals in a thickness direction. Each of the heat removal members includes: an upstream side end portion; a downstream side end portion; and a thickest portion with a largest thickness which is provided between the upstream side end portion and the downstream side end portion. Thickness of the heat removal member continuously changes between the upstream side end portion and the downstream side end portion via the thickest portion.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: February 25, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Misuzu Sakai, Hiroki Tashiro, Takayuki Masunaga, Katsumi Hisano, Takahiro Terada, Toshiyuki Uchii, Takanori Iijima, Tomoyuki Yoshino
  • Publication number: 20190386220
    Abstract: There are provided a ?-conjugated boron compound, an electronic device containing an organic functional layer including the ?-conjugated boron compound, a method for producing a triarylborane, and a method for producing a triarylborane intermediate. In the ?-conjugated boron compound, a boron atom is bonded to three aromatic groups via three boron-carbon bonds. Bond distances of the three boron-carbon bonds are all 1.48 ? or less.
    Type: Application
    Filed: March 17, 2017
    Publication date: December 19, 2019
    Inventors: Hiroshi KITA, Takayuki IIJIMA, Shuichi OI, Yuichi KITAMOTO
  • Patent number: 10465036
    Abstract: A polymerizable composition which can suppress generation of turbidity, optical distortion, and striae in a transparent resin obtained therefrom, a transparent resin obtained from the polymerizable composition, an optical material containing the transparent resin, a plastic lens containing the optical material, and a method for manufacturing the transparent resin. The present disclosure is a polymerizable composition containing a polythiol compound having at least three mercapto groups and a polyiso(thio)cyanate compound. The polyiso(thio)cyanate compound contains only a polyiso(thio)cyanate compound having no aromatic ring, and a thiol equivalent ratio which is a measured value of a thiol equivalent of the polythiol compound with respect to a theoretical value of the thiol equivalent is 0.900 or more and less than 1.000.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: November 5, 2019
    Assignee: HOYA LENS THAILAND LTD.
    Inventors: Takayuki Iijima, Masahisa Kousaka
  • Publication number: 20190295791
    Abstract: According to an embodiment, a gas-blast circuit breaker comprises a heat removal unit in a flow path of arc extinguishing gas. The heat removal unit each includes: plate-shaped heat removal members contacting the arc extinguishing gas flowing in the flow path; and a holding portion holding the plate-shaped heat removal members to stack the heat removal members at intervals in a thickness direction. Each of the heat removal members includes: an upstream side end portion; a downstream side end portion; and a thickest portion with a largest thickness which is provided between the upstream side end portion and the downstream side end portion. Thickness of the heat removal member continuously changes between the upstream side end portion and the downstream side end portion via the thickest portion.
    Type: Application
    Filed: March 7, 2019
    Publication date: September 26, 2019
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Misuzu SAKAI, Hiroki TASHIRO, Takayuki MASUNAGA, Katsumi HISANO, Takahiro TERADA, Toshiyuki UCHII, Takanori IIJIMA, Tomoyuki YOSHINO
  • Patent number: 10343733
    Abstract: PROBLEM: To provide a cover body (18) at a space X formed between a motor housing (14) and a sprocket (15) which are the components of a drive sprocket (10) of a base carrier (2) in a hydraulic shovel, so as to prevent foreign substances such as sand from entering into the space, and to be installed to the motor housing side (14) without forming a bolt hole. SOLUTION: A cover body (18) is formed to be a split-body divided to an upper half (19) and a lower half (20), and to be connected to each other to form a ring shape by connecting a connect bolt (23) formed at an adjacent part of the cover body (18). The cover body (18) is installed to the space X by inserting an adjust bolt (21) into a ring shaped main body part (19a and 20a) till abut the motor housing (14) tightly. An outlet (26) is formed as a notch on a cover body (19d and 20d) to discharge the foreign substances entering into the space X between the sprocket housing (15) and a tip end of the cover part.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: July 9, 2019
    Assignee: Caterpillar SARL
    Inventors: Seiji Iijima, Takayuki Shiokawa, Shinya Nakagawa, Junichi Furukawa
  • Patent number: 10337398
    Abstract: Disclosed is a blowby gas treatment device for an internal combustion engine with a supercharger, the blowby gas treatment device comprising: a fresh air introduction passage wherein one end of the fresh air introduction passage is connected to an upstream side of the supercharger and the other end is communicated with a crankcase of the internal combustion engine; a first blowby gas passage wherein one end of the first blowby gas passage is connected to a venturi part provided in an upstream side of the supercharger in the intake passage and the other end is communicated with the crankcase; a first check valve being interposed in the fresh air introduction passage and preventing a flow from the crankcase side to the intake passage side; and a second check valve being interposed in the blowby gas passage and preventing a flow from the intake passage side to the crankcase side.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: July 2, 2019
    Assignee: MAHLE FILTER SYSTEMS JAPAN CORPORATION
    Inventors: Atsushi Nonaka, Daizo Ito, Terumoto Mochizuki, Akira Iijima, Takayuki Sakai
  • Publication number: 20190115537
    Abstract: An organic electroluminescence element material contains a n-conjugated boron compound having a structure represented by Formula (1), wherein, X1 and X2 each independently represent O, S, or N—Y1, Y1 represents an alkyl group, an aromatic hydrocarbon ring group, or an aromatic heterocyclic group, when there are a plurality of Y1s the plurality of Y1s may be the same or different, R1 to R9 each independently represent a hydrogen atom or a substituent.
    Type: Application
    Filed: April 28, 2017
    Publication date: April 18, 2019
    Inventors: Yukihiro MAKISHIMA, Takayuki IIJIMA, Hiroshi KITA
  • Publication number: 20190048131
    Abstract: Provided is a light-emitting device including an anode, a light-emitting layer, an electron-transporting layer and a cathode. The electron-transporting layer contains at least one electron-transporting material whose LUMO level is ?3.0 eV or more and at least one dopant material selected from the group consisting of a heterocyclic compound whose SOMO level is ?2.2 to ?1.5 eV and a derivative thereof. The LUMO level of the electron-transporting material is smaller than the SOMO level of the heterocyclic compound.
    Type: Application
    Filed: March 21, 2017
    Publication date: February 14, 2019
    Inventors: Takayuki IIJIMA, Satoshi KOBAYASHI, Masanobu TANAKA, Nobuhiko AKINO, Sheena ZUBERI
  • Publication number: 20190013478
    Abstract: The purpose of the present invention is to provide an organic electroluminescent element having improved luminous efficiency and stability under high-temperature storage. The present invention is an organic electroluminescent element that has an anode, a cathode, and at least one light-emitting layer sandwiched between the anode and the cathode, and is characterized in that at least one of the light-emitting layers contains a ?-conjugated boron compound having a structure represented by general formula (1). (In general formula (1), X1 to X9 each independently represents —CR or a nitrogen atom, R represents a hydrogen atom or a substituent, and Y1 to Y3 each independently represents an oxygen atom or a sulfur atom).
    Type: Application
    Filed: July 22, 2016
    Publication date: January 10, 2019
    Inventors: Takayuki IIJIMA, Hiroshi KITA
  • Patent number: 10144796
    Abstract: Provided are a polymerizable composition allowing obtainment of an optical component with reduced striae, an optical component obtained from the polymerizable composition, a plastic lens containing the optical component, and a spectacle lens including a lens substrate including the optical component. The polymerizable composition of the present disclosure contains an isocyanate component which contains alicyclic polyisocyanate (A-1) having two or more isocyanate groups and non-cyclic aliphatic polyisocyanate (A-2) having two or more isocyanate groups, and a polythiol component which contains polythiol (B-1) having four or more mercapto groups and two or more sulfide bonds and polythiol (B-2) having two or three mercapto groups and two or three ester bonds. The optical component is obtained by polymerizing the polymerizable composition of the present disclosure. The plastic lens contains the optical component of the present disclosure.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: December 4, 2018
    Assignee: HOYA LENS THAILAND LTD.
    Inventor: Takayuki Iijima
  • Patent number: 10106640
    Abstract: A polymerizable composition which can suppress generation of turbidity, optical distortion, and striae in a transparent resin obtained therefrom, a transparent resin obtained from the polymerizable composition, an optical material containing the transparent resin, a plastic lens containing the optical material, and a method for manufacturing the transparent resin. A polymerizable composition of the present disclosure contains a polythiol compound having at least three mercapto groups and a polyiso(thio)cyanate compound having at least one aromatic ring. A thiol equivalent ratio which is a measured value of a thiol equivalent of the polythiol compound with respect to a theoretical value of the thiol equivalent is 0.975 or more and less than 1.000.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: October 23, 2018
    Assignee: HOYA LENS THAILAND LTD.
    Inventors: Takayuki Iijima, Masahisa Kousaka
  • Publication number: 20180203396
    Abstract: A printing apparatus includes a driving source that drives a feeding portion for feeding a medium, a printing portion that performs printing on the medium, a substrate that includes a signal supplying portion for supplying a signal to the driving source and a power supplying portion for supplying power to the driving source, a shielding portion that covers the substrate, and a pair of side plates that is provided at an interval in a width direction to be connected to the shielding portion.
    Type: Application
    Filed: January 9, 2018
    Publication date: July 19, 2018
    Inventor: Takayuki IIJIMA
  • Publication number: 20180170914
    Abstract: In order to provide a novel ?-conjugated compound capable of increasing the light-emission efficiency of an organic electroluminescence element, for example, this ?-conjugated compound has a structure indicated by general formula (1). (In general formula (1): Z1-Z6 each independently indicate a hydrogen atom, a deuterium atom, an electron-donating group D, or an electron-withdrawing group A; at least out of two among Z1-Z6 is an electron-donating group D and the other is an electron-withdrawing group A; and at least one ortho position combination Z1 and Z2, Z2 and Z3, Z3 and Z4, Z4 and Z5, Z5 and Z6, or Z6 and Z1 among Z1-Z6 is one combination out of an electron-donating group D and an electron-donating group D, an electron-withdrawing group A and an electron-withdrawing group A, or an electron-donating group D and an electron-withdrawing group A.
    Type: Application
    Filed: April 27, 2016
    Publication date: June 21, 2018
    Applicant: Konica Minolta, Inc.
    Inventors: Yasuo MIYATA, Taketo NAMIKAWA, Takayuki IIJIMA, Ryutaro SUGAWARA, Tetsuya YAMADA, Takatugu SUZUKI
  • Patent number: 9972802
    Abstract: The organic electroluminescent element has a pair of electrodes and at least two organic functional layers including a light-emitting layer on a substrate. The light-emitting layer contains a host compound and a phosphorescent dopant. The light-emitting layer or the layer adjacent to the light-emitting layer contains quantum dots.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: May 15, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Dai Ikemizu, Takayuki Iijima, Takamune Hattori, Yasushi Okubo, Hideo Taka
  • Publication number: 20180100033
    Abstract: Provided are a polymerizable composition allowing obtainment of an optical component with reduced striae, an optical component obtained from the polymerizable composition, a plastic lens containing the optical component, and a spectacle lens including a lens substrate including the optical component. The polymerizable composition of the present disclosure contains an isocyanate component which contains alicyclic polyisocyanate (A-1) having two or more isocyanate groups and non-cyclic aliphatic polyisocyanate (A-2) having two or more isocyanate groups, and a polythiol component which contains polythiol (B-1) having four or more mercapto groups and two or more sulfide bonds and polythiol (B-2) having two or three mercapto groups and two or three ester bonds. The optical component is obtained by polymerizing the polymerizable composition of the present disclosure. The plastic lens contains the optical component of the present disclosure.
    Type: Application
    Filed: March 25, 2016
    Publication date: April 12, 2018
    Applicant: HOYA LENS THAILAND LTD.
    Inventor: Takayuki IIJIMA
  • Patent number: 9758688
    Abstract: A composition is provided for forming a conductive film. The composition includes a metal compound, a reducing agent, an ionic compound and/or a polar compound, and a compound having at least one atom selected from a nitrogen atom, a sulfur atom and a phosphorus atom. The composition may be an ink composition for coating on an electronic device.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: September 12, 2017
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Takayuki Iijima, Ken Sakakibara, Hideyuki Higashimura
  • Publication number: 20170240683
    Abstract: A polymerizable composition which can suppress generation of turbidity, optical distortion, and striae in a transparent resin obtained therefrom, a transparent resin obtained from the polymerizable composition, an optical material containing the transparent resin, a plastic lens containing the optical material, and a method for manufacturing the transparent resin. A polymerizable composition of the present disclosure contains a polythiol compound having at least three mercapto groups and a polyiso(thio)cyanate compound having at least one aromatic ring. A thiol equivalent ratio which is a measured value of a thiol equivalent of the polythiol compound with respect to a theoretical value of the thiol equivalent is 0.975 or more and less than 1.000.
    Type: Application
    Filed: September 9, 2015
    Publication date: August 24, 2017
    Applicant: HOYA LENS THAILAND LTD.
    Inventors: Takayuki IIJIMA, Masahisa KOUSAKA
  • Publication number: 20170226268
    Abstract: A polymerizable composition which can suppress generation of turbidity, optical distortion, and striae in a transparent resin obtained therefrom, a transparent resin obtained from the polymerizable composition, an optical material containing the transparent resin, a plastic lens containing the optical material, and a method for manufacturing the transparent resin. The present disclosure is a polymerizable composition containing a polythiol compound having at least three mercapto groups and a polyiso(thio)cyanate compound. The polyiso(thio)cyanate compound contains only a polyiso(thio)cyanate compound having no aromatic ring, and a thiol equivalent ratio which is a measured value of a thiol equivalent of the polythiol compound with respect to a theoretical value of the thiol equivalent is 0.900 or more and less than 1.000.
    Type: Application
    Filed: September 9, 2015
    Publication date: August 10, 2017
    Applicant: HOYA LENS THAILAND LTD.
    Inventors: Takayuki IIJIMA, Masahisa KOUSAKA