Patents by Inventor Masahiro Kawamura

Masahiro Kawamura 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).

  • Carbazole derivative, material for organic electroluminescent element which comprises same, and organic electroluminescent element and electronic device each manufactured using same
    Patent number: 9963429
    Abstract: A novel carbazole derivative represented by formula (1) in which two or more groups each having a specific structure, such as a carbazolyl group, are bonded to two or more of 2-, 3- and 4-positions of the carbazole derivative is useful as a material for organic electroluminescence devices. A material for organic electroluminescence devices including the carbazole derivative, an organic electroluminescence device employing the carbazole derivative, and an electronic equipment are described. wherein at least two selected from B1 to B3 are represented by formula (2) and A, X1 to X4, L, n, Y, and R1 to R8 are as defined in claim 1.
    Type: Grant
    Filed: September 1, 2014
    Date of Patent: May 8, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko Mizuki, Hirokatsu Ito, Tasuku Haketa, Tomoharu Hayama, Kazuki Nishimura, Masahiro Kawamura, Mitsuru Shibata
  • Organic electroluminescent device using aryl amine derivative containing heterocycle
    Patent number: 9960360
    Abstract: An organic electroluminescent device including: an anode, a cathode, an emitting layer formed of an organic compound and interposed between the cathode and the anode, and two or more layers provided in a hole-injecting/hole-transporting region between the anode and the emitting layer; of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is in contact with the emitting layer containing a compound represented by the formula (1); and of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is interposed between the anode and the layer which is in contact with the emitting layer containing an amine derivative represented by the formula (2).
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: May 1, 2018
    Assignees: IDEMITSU KOSAN CO., LTD., JOLED INC.
    Inventors: Masahiro Kawamura, Emiko Kambe, Akifumi Nakamura, Yasunori Kijima, Tadahiko Yoshinaga, Shigeyuki Matsunami
  • Oil-free screw compressor coated with a base resin, a solid lubricant and a heat-resistant additive
    Patent number: 9944880
    Abstract: In order to prevent deterioration in performance of an oil-free screw compressor and scuffing caused by rust, surfaces of both male and female rotors are coated with heat-resistance coatings containing a solid lubricant. A coating contains Polyimide resin to which Molybdenum disulfide, as a solid lubricant, and Aluminum oxide and Titanium oxide, as additives, are added. Accordingly, it is possible to realize a coating that is higher in heat resistance and longer in lifetime than a conventional one.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: April 17, 2018
    Assignees: HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD., KAWAMURA RESEARCH LABORATORIES, INC.
    Inventors: Yukiko Ikeda, Kazuaki Shiinoki, Masakatsu Okaya, Natsuki Kawabata, Masahiro Kawamura, Iwao Aoki
  • Anthracene derivative and organic electroluminescence element using same
    Patent number: 9947879
    Abstract: An anthracene derivative represented by the following formula (1): wherein in the formula (1), L1 is selected from a single bond and a linking group, and the linking group is selected from a divalent arylene group, a divalent heterocyclic group, and a group formed by linking of 2 to 4 of divalent arylene groups and/or divalent heterocyclic groups. Ar1 is selected from the following formulas (2) and (3). In the formulas (2) and (3), X is selected from an oxygen atom and a sulfur atom. In the formula (2), any one of R11 to R14 is used for bonding to L1. In the formula (3), any one of R21 to R24 is used for bonding to L1. Ar2 is selected from a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms and a substituted or unsubstituted heterocyclic group including 5 to 50 ring atoms.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: April 17, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Hirokatsu Ito, Hiroyuki Saito, Yumiko Mizuki, Masahiro Kawamura
  • ORGANIC ELECTROLUMINESCENT DEVICE USING ARYL AMINE DERIVATIVE CONTAINING HETEROCYCLE
    Publication number: 20180090685
    Abstract: An organic electroluminescent device including: an anode, a cathode, an emitting layer formed of an organic compound and interposed between the cathode and the anode, and two or more layers provided in a hole-injecting/hole-transporting region between the anode and the emitting layer; of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is in contact with the emitting layer containing a compound represented by the formula (1); and of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is interposed between the anode and the layer which is in contact with the emitting layer containing an amine derivative represented by the formula (2).
    Type: Application
    Filed: December 1, 2017
    Publication date: March 29, 2018
    Applicants: Idemitsu Kosan Co., Ltd., JOLED Inc.
    Inventors: Masahiro Kawamura, Emiko Kambe, Akifumi Nakamura, Yasunori Kijima, Tadahiko Yoshinaga, Shigeyuki Matsunami
  • Aromatic amine derivative and organic electroluminescent element using same
    Patent number: 9923146
    Abstract: An aromatic amine derivative represented by the following formula (1): wherein at least one of R1 to R8 is a group other than a hydrogen atom, Ar1 to Ar4 are a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: March 20, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko Mizuki, Masahiro Kawamura, Sayaka Mizutani
  • Carbazole-based polymer and organic electroluminescence element using same
    Patent number: 9923141
    Abstract: A polymer including a structural unit represented by the following formula (A). In the formula (A), P is independently a group represented by the following formula (P), a is an integer of 2 to 5, and b is an integer of 0 to 5. In the formula (P), A is independently a nitrogen atom or CR; X is a single bond, O, S, C(R)2 or NR. R is independently a hydrogen atom, a substituted or unsubstituted alkyl group including 1 to 20 carbon atoms or the like, or a single bond used for bonding to another P or L, provided that at least one R contained in (P)a is represented by any one of the following formulas (3) to (7).
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: March 20, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Akinori Yomogita, Hironori Kawakami, Masami Watanabe, Kiyoshi Ikeda, Masahiro Kawamura, Nobuhiro Yabunouchi, Tomoki Kato
  • Cross-linking polymer and organic electroluminescent element using same
    Patent number: 9917273
    Abstract: A polymer including structural units represented by the following formulas (A) and (B). In the formula (A), P is a group derived from a compound represented by the formula (P). L1 is a linkage group. In the formula (B), Q is a group derived from a compound represented by the formula (Q). L2 is a linkage group. In the formula (B), at least one of “c”Qs and “d”L2s includes a cross-linkable group.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: March 13, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Akinori Yomogita, Hironori Kawakami, Masami Watanabe, Kiyoshi Ikeda, Masahiro Kawamura, Nobuhiro Yabunouchi, Tomoki Kato
  • Compound
    Patent number: 9902687
    Abstract: A compound is represented by the following formula (1). In the formula (1), Ar is a substituted or unsubstituted aryl group including 6 to 30 ring carbon atoms, Ra are independently a substituted or unsubstituted alkyl group including 1 to 15 carbon atoms, or a substituted or unsubstituted cycloalkyl group including 3 to 15 carbon atoms, Rb1 to Rb4 are independently a halogen atom, a cyano group, a substituted or unsubstituted alkyl group including 1 to 15 carbon atoms, or the like, Rc1 to Rc10 are independently a hydrogen atom, a halogen atom, a cyano group, a substituted or unsubstituted alkyl group including 1 to 15 carbon atoms, or the like, * is a bonding position at which one of Rc1 to Rc10 is bonded to either nitrogen atom, x is an integer from 0 to 3, y is an integer from 0 to 4, and z are independently an integer from 0 to 5.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: February 27, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Hirokatsu Ito, Masahiro Kawamura, Yumiko Mizuki, Tasuku Haketa, Tomoharu Hayama, Ryota Takahashi
  • ORGANIC ELECTROLUMINESCENT DEVICE USING ARYL AMINE DERIVATIVE CONTAINING HETEROCYCLE
    Publication number: 20180040828
    Abstract: An organic electroluminescent device including: an anode, a cathode, an emitting layer formed of an organic compound and interposed between the cathode and the anode, and two or more layers provided in a hole-injecting/hole-transporting region between the anode and the emitting layer; of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is in contact with the emitting layer containing a compound represented by the formula (1); and of the layers which are provided in the hole-injecting/hole-transporting region, a layer which is interposed between the anode and the layer which is in contact with the emitting layer containing an amine derivative represented by the formula (2).
    Type: Application
    Filed: October 4, 2017
    Publication date: February 8, 2018
    Applicants: Idemitsu Kosan Co., Ltd., JOLED Inc.
    Inventors: Masahiro KAWAMURA, Emiko Kambe, Akifumi Nakamura, Yasunori Kijima, Tadahiko Yoshinaga, Shigeyuki Matsunami
  • Heterocyclic compound, material for organic electroluminescent elements using same, organic electroluminescent element using same, and electronic device
    Patent number: 9887367
    Abstract: A heterocyclic compound in which three 5-membered rings are fused to a benzene ring and a saturated or unsaturated ring is further fused to each of the 5-membered rings is a novel material, which is useful as a material for organic electroluminescence devices for the production of organic electroluminescence devices and electronic equipment.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: February 6, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Tasuku Haketa, Masahiro Kawamura, Kazuki Nishimura, Yumiko Mizuki
  • COMPOUND, ORGANIC ELECTROLUMINESCENT ELEMENT MATERIAL, ORGANIC ELECTROLUMINESCENT ELEMENT, AND ELECTRONIC DEVICE
    Publication number: 20180029983
    Abstract: Disclosed herein is a compound represented by formula (1): A-L-B, wherein: A is a group represented by formula (1-A); B is a group represented by formula (1-B); L is a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heteroarylene group having 5 to 50 ring atoms; and L is bonded to one of R1 to R4 of formula (1-A) and R11 to R14 of formula (1-B); in which the groups Q1, Q2, L1, L2, R1-R4, R11-R14, Ra-Rd and Re-Rh defined herein. Also disclosed herein are materials and devices containing the compound represented by formula (1).
    Type: Application
    Filed: February 16, 2016
    Publication date: February 1, 2018
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Tomoki KATO, Masahiro KAWAMURA
  • Organic electroluminescent element
    Patent number: 9882144
    Abstract: An organic electroluminescence device includes: an anode; a cathode; and an organic layer interposed between the anode and the cathode, in which the organic layer includes an emitting layer and the emitting layer includes a compound represented by a formula (1) below and a compound represented by a formula (2) below. Az1 of the formula (1) below and Az2 of the formula (2) below are each an azine ring. Cz of the formula (1) below and HAr of the formula (2) below are each a nitrogen-containing heterocyclic ring.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: January 30, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Masahiro Kawamura, Yumiko Mizuki, Toshinari Ogiwara, Hitoshi Kuma
  • Nitrogen-containing heterocyclic derivative, organic electroluminescence element material using same, and organic electroluminescence element and electronic device using same
    Patent number: 9837615
    Abstract: A nitrogen-containing heterocyclic derivative in which an indole structure is fused to a benzophenanthrene ring is a novel material useful as a material for organic electroluminescence devices for the production of organic electroluminescence devices and electronic equipment.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: December 5, 2017
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Masahiro Kawamura, Yumiko Mizuki, Hirokatsu Ito, Tomoharu Hayama, Tasuku Haketa
  • OXYGEN-CONTAINING FUSED RING AMINE COMPOUND, SULFUR-CONTAINING FUSED RING AMINE COMPOUND AND ORGANIC ELECTROLUMINESCENCE DEVICE
    Publication number: 20170324043
    Abstract: A fused amine compound including a furan ring or a thiophene ring and an organic electroluminescence device employing the amine compound. The organic electroluminescence device includes a cathode, an anode, and one or more organic thin film layers which are disposed between the cathode and the anode. The organic thin film layers include a light emitting layer and at least one layer of the organic thin film layers includes at least one amine compound.
    Type: Application
    Filed: July 25, 2017
    Publication date: November 9, 2017
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yoichi IKEDA, Hirokatsu ITO, Masahiro KAWAMURA, Hiroyuki SAITO, Takeshi IKEDA
  • AROMATIC AMINE DERIVATIVE, AND ORGANIC ELECTROLUMINESCENT ELEMENT COMPRISING THE SAME
    Publication number: 20170317284
    Abstract: An aromatic amine derivative represented by the following formula (1) wherein at least one of Ar1 to Ar4 is a heterocyclic group represented by the following formula (2) wherein X1 is an oxygen atom or a sulfur atom.
    Type: Application
    Filed: July 12, 2017
    Publication date: November 2, 2017
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko MIZUKI, Masakazu FUNAHASHI, Masahiro KAWAMURA
  • AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT ELEMENT USING SAME
    Publication number: 20170309822
    Abstract: An aromatic amine derivative represented by the following formula (1): wherein at least one of R1 to R8 is a group other than a hydrogen atom, Ar1 to Ar4 are a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms.
    Type: Application
    Filed: July 7, 2017
    Publication date: October 26, 2017
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko MIZUKI, Masahiro KAWAMURA, Sayaka MIZUTANI
  • Oxygen-containing fused ring amine compound, sulfur-containing fused ring amine compound and organic electroluminescence device
    Patent number: 9755156
    Abstract: A fused amine compound including a furan ring or a thiophene ring and an organic electroluminescence device employing the amine compound. The organic electroluminescence device includes a cathode, an anode, and one or more organic thin film layers which are disposed between the cathode and the anode. The organic thin film layers include a light emitting layer and at least one layer of the organic thin film layers includes at least one amine compound.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: September 5, 2017
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yoichi Ikeda, Hirokatsu Ito, Masahiro Kawamura, Hiroyuki Saito, Takeshi Ikeda
  • Condensed fluoranthene compound, material for organic electroluminescent element using this compound, organic electroluminescent element using this material, and electronic device
    Patent number: 9741943
    Abstract: A fused fluoranthene compound which includes an indeno[3,2-b]fluoranthene skeleton having a hetero atom is a novel compound, which is useful as a material for organic electroluminescence devices for use in an organic electroluminescence device and an electronic equipment.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: August 22, 2017
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Masahiro Kawamura, Kazuki Nishimura
  • Aromatic amine derivative, and organic electroluminescent element comprising the same
    Patent number: 9741938
    Abstract: An aromatic amine derivative represented by the following formula (1) wherein at least one of Ar1 to Ar4 is a heterocyclic group represented by the following formula (2) wherein X1 is an oxygen atom or a sulfur atom.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: August 22, 2017
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko Mizuki, Masakazu Funahashi, Masahiro Kawamura