Patents by Inventor Tatsuo Tanaka

Tatsuo Tanaka 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: 9627630
    Abstract: Disclosed is an organic electroluminescent device having long life, while exhibiting high luminous efficiency. Also disclosed are an illuminating device and a display, each using such an organic electroluminescent device. In the organic electroluminescent device, a compound represented by the general formula (A) which is suitable as a host material for a phosphorescent metal complex is used at least in one sublayer of a light-emitting layer.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: April 18, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Shinya Otsu, Eisaku Katoh, Tatsuo Tanaka
  • Patent number: 9590188
    Abstract: Disclosed is an organic electroluminescent device having long life, while exhibiting high luminous efficiency. Also disclosed are an illuminating device and a display, each using such an organic electroluminescent device. In the organic electroluminescent device, a compound represented by the general formula (A) which is suitable as a host material for a phosphorescent metal complex is used at least in one sublayer of a light-emitting layer.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: March 7, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Shinya Otsu, Eisaku Katoh, Tatsuo Tanaka
  • Publication number: 20170054092
    Abstract: Disclosed is an organic electroluminescent device having long life, while exhibiting high luminous efficiency. Also disclosed are an illuminating device and a display, each using such an organic electroluminescent device. In the organic electroluminescent device, a compound represented by the general formula (A) which is suitable as a host material for a phosphorescent metal complex is used at least in one sublayer of a light-emitting layer.
    Type: Application
    Filed: November 1, 2016
    Publication date: February 23, 2017
    Inventors: Shinya OTSU, Eisaku KATOH, Tatsuo TANAKA
  • Publication number: 20160268516
    Abstract: An objective of the present invention is to provide: an organic electroluminescent element which has high efficiency and a long service life; and an electronic device and a light emitting device, each of which is provided with the organic electroluminescent element. Another objective of the present invention is to provide a light emitting material which has high efficiency and a long service life. An organic electroluminescent element according to the present invention comprises at least one organic layer that is interposed between a positive electrode and a negative electrode.
    Type: Application
    Filed: August 14, 2014
    Publication date: September 15, 2016
    Inventors: Tatsuo TANAKA, Hideo TAKA, Hiroshi KITA
  • Publication number: 20160197282
    Abstract: An organic electroluminescent element contains at least one organic layer that is interposed between an anode and a cathode. The organic layer includes a light emitting layer. The light emitting layer contains a light emitting compound that has a stokes shift within the range of 0-0.24 eV and a lowest excited singlet energy (S1) of 2.64 eV or more.
    Type: Application
    Filed: August 14, 2014
    Publication date: July 7, 2016
    Inventors: Shuho TANIMOTO, Dai IKEMIZU, Tatsuo TANAKA, Hideo TAKA, Hiroshi KITA
  • Patent number: 9293715
    Abstract: Disclosed is an organic electroluminescent device having long life, while exhibiting high luminous efficiency. Also disclosed are an illuminating device and a display, each using such an organic electroluminescent device. In the organic electroluminescent device, a compound represented by the general formula (A) which is suitable as a host material for a phosphorescent metal complex is used at least in one sublayer of a light-emitting layer.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: March 22, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Shinya Otsu, Eisaku Katoh, Tatsuo Tanaka
  • Publication number: 20160079548
    Abstract: This invention addresses the problem of providing an electronic device, organic electroluminescent device, conductive film, organic thin-film solar cell, and dye-sensitized solar cell provided with a charge-transporting thin film that exhibits excellent stability. In the presence of external disturbances, the charge-transporting thin film exhibits little in the way of fluctuations, and the resistance of the charge-transporting thin film changes little over time as current is supplied. As one of the secondary effects thereof, the charge-transporting thin film results in little in the way of changes in emission characteristics over time.
    Type: Application
    Filed: May 21, 2014
    Publication date: March 17, 2016
    Inventors: Hiroshi KITA, Tatsuo TANAKA, Rie KATAKURA
  • Publication number: 20160071625
    Abstract: This invention addresses the problem of providing a charge-transporting thin film with small variations in properties due to disturbance and small variations in resistance over time during application of current. The invention further provides a charge-transporting thin film with a secondary effect of small variations over time and stable luminescent properties. The charge-transporting thin film of the present invention contains one or more types of functional organic compounds having chiral elements, and is characterized in that the total of the number of chiral elements per molecule in each type of the functional organic compounds summed over all types of the functional organic compounds is four or more.
    Type: Application
    Filed: May 21, 2014
    Publication date: March 10, 2016
    Inventors: Hiroshi KITA, Tatsuo TANAKA, Rie KATAKURA
  • Patent number: 9267858
    Abstract: A differential pressure sensor includes a sensor chip provided with a sensor diaphragm, a first retaining member bonded facing a peripheral edge portion of one face of the sensor diaphragm and having a first pressure guiding hole guiding a first fluid pressure to the one face of the sensor diaphragm, and a second retaining member bonded facing a peripheral edge portion of the other face of the sensor diaphragm and having a second pressure guiding hole guiding a second fluid pressure to the other face of the sensor diaphragm. The differential pressure sensor also includes a sensor housing having a sensor chamber containing the sensor chip, a first pressure guiding duct guiding the first fluid pressure to a first inner wall face of the sensor chamber, and a second pressure guiding duct guiding the second fluid pressure to a second inner wall face of the sensor chamber.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: February 23, 2016
    Assignee: AZBIL CORPORATION
    Inventors: Tatsuo Tanaka, Yoshiyuki Ishikura
  • Patent number: 9263684
    Abstract: Disclosed is an organic electroluminescent device having high external quantum efficiency and long life. Also disclosed are an illuminating device and a display device. The organic electroluminescent device is characterized by containing at least one compound having a partial structure represented by the following general Formula (1). [chemical formula 1] (1) In the formula, R1 represents a group (preferably an aromatic hydrocarbon group, an aromatic heterocyclic group, an alkyl group or an alkoxy group) having 4-20 carbon atoms in total and a substituent having a formula weight or 70-350 (preferably an alkyl group or an alkoxy group): R2-R4 independently represent a substituent; n2 represents a number of 0-4; n3 represents a number of 0-2; n4 represents a number of 0-8; and Q represents an atomic group necessary for forming an aromatic hydrocarbon ring or an aromatic heterocyclic ring.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: February 16, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Tatsuo Tanaka, Hiroshi Kita, Rie Katakura, Hideo Taka
  • Patent number: 9257680
    Abstract: In the present invention, provided is an organic electroluminescent element material having a high externally taking-out quantum efficiency, which is suitable for manufacturing an element exhibiting long light emission lifetime, and also provided is an organic electroluminescent element possessing the material, a method of manufacturing the organic electroluminescent element, and a display as well as an illuminating device fitted with the organic electroluminescent element.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: February 9, 2016
    Assignee: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Tatsuo Tanaka, Hiroshi Kita, Rie Katakura, Hideo Taka
  • Publication number: 20150162550
    Abstract: Disclosed is an organic electroluminescent device having long life, while exhibiting high luminous efficiency. Also disclosed are an illuminating device and a display, each using such an organic electroluminescent device. In the organic electroluminescent device, a compound represented by the general formula (A) which is suitable as a host material for a phosphorescent metal complex is used at least in one sublayer of a light-emitting layer.
    Type: Application
    Filed: January 13, 2015
    Publication date: June 11, 2015
    Inventors: Shinya OTSU, Eisaku KATOH, Tatsuo TANAKA
  • Patent number: 9048434
    Abstract: Disclosed is an organic electroluminescent device having long life, while exhibiting high luminous efficiency. Also disclosed are an illuminating device and a display, each using such an organic electroluminescent device. In the organic electroluminescent device, a compound represented by the general formula (A) which is suitable as a host material for a phosphorescent metal complex is used at least in one sublayer of a light-emitting layer.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: June 2, 2015
    Assignee: KONICA MINOLTA, INC.
    Inventors: Shinya Otsu, Eisaku Katoh, Tatsuo Tanaka
  • Patent number: 9005770
    Abstract: Provided are a novel compound, an organic EL element which contains such novel compound and has a high external extraction quantum efficiency and a long service life, an illuminating apparatus and a display apparatus.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: April 14, 2015
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Hideo Taka, Hiroshi Kita, Tatsuo Tanaka
  • Patent number: 8951650
    Abstract: Provided is an organic electroluminescent element comprising a substrate having thereon an anode, a cathode, and a plurality of organic layers sandwiched between the anode and the cathode, wherein the plurality of organic layers comprise: a light emitting layer containing a phosphorescence emitting compound; and an electron transport layer containing a compound represented by Formula (1), (Ar1)n1?Y1??Formula (1) wherein n1 is an integer of 1 or more; Y1 is a substituent when n1 is 1, and Y1 is a single bond or a linking group of n1 valences when n1 is two or more; Ar1 is a group represented by Formula (A), a plurality of Ar1 may be the same or different with each other when n1 is two or more; and the compound represented by Formula (1) contains at least two condensed aromatic heterocyclic rings each comprising 3 or more rings condensed with each other:
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: February 10, 2015
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Noriko Yasukawa, Hiroshi Kita, Eisaku Katoh, Tatsuo Tanaka, Shinya Otsu, Rie Katakura, Hidekane Ozeki, Hideo Taka
  • Publication number: 20150005504
    Abstract: Disclosed is an organic electroluminescent device having high external quantum efficiency and long life. Also disclosed are an illuminating device and a display device. The organic electroluminescent device is characterized by containing at least one compound having a partial structure represented by the following general formula (1). [chemical formula 1] (l) In the formula, R1 represents a group (preferably an aromatic hydrocarbon group, an aromatic heterocyclic group, an alkyl group or an alkoxy group) having 4-20 carbon atoms in total and a substituent having a formula weight or 70-350 (preferably an alkyl group or an alkoxy group): R2R4 independently represent a substituent; n2 represents a number of 0-4; n3 represents a number of 0-2; n4 represents a number of 0-8; and Q represents an atomic group necessary for forming an aromatic hydrocarbon ring or an aromatic heterocyclic ring.
    Type: Application
    Filed: December 21, 2012
    Publication date: January 1, 2015
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Tatsuo TANAKA, Hiroshi KITA, Rie KATAKURA, Hideo TAKA
  • Publication number: 20140302230
    Abstract: In the present invention, provided is an organic electroluminescent element material having a high externally taking-out quantum efficiency, which is suitable for manufacturing an element exhibiting long light emission lifetime, and also provided is an organic electroluminescent element possessing the material, a method of manufacturing the organic electroluminescent element, and a display as well as an illuminating device fitted with the organic electroluminescent element.
    Type: Application
    Filed: May 2, 2014
    Publication date: October 9, 2014
    Applicant: Konica Minolta, Inc.
    Inventors: Tatsuo TANAKA, Hiroshi KITA, Rie KATAKURA, Hideo TAKA
  • Patent number: 8852757
    Abstract: Disclosed is an organic electroluminescent device having high external quantum efficiency and long emission life. Also disclosed are an illuminating device and a display, each comprising such an organic electroluminescent device. The organic electroluminescent device is characterized by comprising at least an anode and a cathode on a supporting substrate, while having at least one light-emitting layer between the anode and the cathode. The organic electroluminescent device is also characterized by containing a polymer which at least partially contains a compound A having a partial structure represented by the general formula (a) below and a reactive group, and is obtained by polymerizing the compound A through the reactive group. (In the formula, Ar1 and Ar2 respectively represent an aromatic ring.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: October 7, 2014
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Rie Katakura, Hiroshi Kita, Tatsuo Tanaka, Hideo Taka
  • Patent number: 8790793
    Abstract: Provided is an organic electroluminescent element comprising a substrate having thereon an anode, a cathode, and a plurality of organic layers sandwiched between the anode and the cathode, wherein the plurality of organic layers comprise: a light emitting layer containing a phosphorescence emitting compound; and an electron transport layer containing a compound represented by Formula (1), (Ar1)n1-Y1??Formula (1) wherein n1 is an integer of 1 or more; Y1 is a substituent when n1 is 1, and Y1 is a single bond or a linking group of n1 valences when n1 is two or more; Ar1 is a group represented by Formula (A), a plurality of Ar1 may be the same or different with each other when n1 is two or more; and the compound represented by Formula (1) contains at least two condensed aromatic heterocyclic rings each comprising 3 or more rings condensed with each other.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: July 29, 2014
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Noriko Yasukawa, Hiroshi Kita, Eisaku Katoh, Tatsuo Tanaka, Shinya Otsu, Rie Katakura, Hidekane Ozeki, Hideo Taka
  • Patent number: RE45216
    Abstract: An organic electroluminescent element including at least an emission layer sandwiched between an anode and a cathode, wherein the emission layer comprises at least a compound represented by Formula (A),
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: October 28, 2014
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Tatsuo Tanaka, Hideo Taka