Patents by Inventor Masakazu Funahashi

Masakazu Funahashi 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).

  • ORGANIC ELECTROLUMINESCENCE DEVICE AND ORGANIC LIGHT EMITTING MEDIUM
    Publication number: 20130328030
    Abstract: An organic electroluminescence device having a layer of an organic light emitting medium which comprises (A) a specific arylamine compound and (B) at least one compound selected from specific anthracene derivatives, spirofluorene derivatives, compounds having condensed rings and metal complex compounds and is disposed between a pair of electrodes and an organic light emitting medium comprising the above components (A) and (B) are provided. The organic electroluminescence device exhibits a high purity of color, has excellent heat resistance and a long life and efficiently emits bluish to yellowish light. The organic light emitting medium can be advantageously used for the organic electroluminescence device.
    Type: Application
    Filed: August 12, 2013
    Publication date: December 12, 2013
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Masahide MATSUURA, Masakazu Funahashi, Kenichi Fukuoka, Chishio Hosokawa
  • Aromatic amine derivative and organic electroluminescent element comprising the same
    Patent number: 8597800
    Abstract: An aromatic amine derivative represented by the following formula (1); wherein Ar1 to Ar4 are independently a substituted or unsubstituted aryl group having 6 to 20 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 5 to 20 ring carbon atoms and at least one of Ar1 to Ar4 has a substituted or unsubstituted silyl group; Ar5 is a substituted or unsubstituted arylene group having 6 to 20 ring carbon atoms or a substituted or unsubstituted heteroarylene group having 5 to 20 ring carbon atoms; and L is a group represented by the following formula (A) or (B);
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: December 3, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Yumiko Mizuki, Mitsunori Ito, Masakazu Funahashi
  • Aromatic amine derivative and organic electroluminescent element made with the same
    Patent number: 8592051
    Abstract: The present invention relates to aromatic amine derivatives having a specific structure in which a substituted diphenylamino group is bonded to a pyrene structure; and organic electroluminescent devices comprising a cathode, an anode and one or plural organic thin film layers having at least a light emitting layer which are sandwiched between the cathode and the anode wherein at least one of the organic thin film layers contains the above material for organic electroluminescent devices in the form of a single substance or a component of a mixture. There are provided the material for organic electroluminescent devices exhibiting a long lifetime and a high efficiency of blue light emission, as well as the aromatic amine derivatives capable of realizing such organic electroluminescent devices.
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: November 26, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Masakazu Funahashi
  • Asymmetric monoanthracene derivative, material for organic electroluminescent device and organic electroluminescent device utilizing the same
    Patent number: 8568902
    Abstract: Provided are an asymmetric monoanthracene derivative having a specific structure, a material for an organic EL device comprising the above asymmetric monoanthracene derivative and an organic EL device in which an organic thin film layer comprising a single layer or plural layers including a luminescent layer is interposed between a cathode and an anode, wherein at least one of the above organic thin film layers contains the asymmetric monoanthracene derivative described above in the form of a single component or a mixed component. Provided are an organic electroluminescent (EL) device having a high luminous efficiency and a long life, an asymmetric monoanthracene derivative which materializes the same and a material for an organic EL device.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: October 29, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Mineyuki Kubota, Masakazu Funahashi
  • AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME
    Publication number: 20130253183
    Abstract: Provided are: an aromatic amine derivative in which a terminal substituent such as a dibenzofuran ring or a dibenzothiophene ring is bonded to a nitrogen atom directly or through an arylene group or the like; an organic electroluminescence device including an organic thin film layer formed of one or more layers including a light emitting layer and interposed between a cathode and an anode in which a layer of the organic thin film layer contains the aromatic amine derivative by itself or as a component of a mixture, and the device has a long lifetime and high luminous efficiency; and an aromatic amine derivative for realizing the device.
    Type: Application
    Filed: May 24, 2013
    Publication date: September 26, 2013
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko MIZUKI, Masakazu Funahashi, Mitsunori Ito, Masahiro Kawamura
  • Aromatic amine derivative and organic electroluminescent device using the same
    Patent number: 8518560
    Abstract: Provided are: an aromatic amine derivative in which a terminal substituent such as a dibenzofuran ring or a dibenzothiophene ring is bonded to a nitrogen atom directly or through an arylene group or the like; an organic electroluminescence device including an organic thin film layer formed of one or more layers including a light emitting layer and interposed between a cathode and an anode in which a layer of the organic thin film layer contains the aromatic amine derivative by itself or as a component of a mixture, and the device has a long lifetime and high luminous efficiency; and an aromatic amine derivative for realizing the device.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: August 27, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Yumiko Mizuki, Masakazu Funahashi, Mitsunori Ito, Masahiro Kawamura
  • Diaminopyrene derivative and organic EL device using the same
    Patent number: 8512878
    Abstract: An organic EL device is provided that includes an emitting layer provided between an anode and a cathode. The emitting layer contains a diaminopyrene derivative represented by the following formula (1) as an emitting material for the organic EL device. The diaminopyrene derivative emits light with electrical energy.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: August 20, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Masakazu Funahashi
  • AROMATIC AMINE DERIVATIVE, AND ORGANIC ELECTROLUMINESCENT ELEMENT COMPRISING THE SAME
    Publication number: 20130153878
    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: February 21, 2013
    Publication date: June 20, 2013
    Inventors: Yumiko Mizuki, Masakazu Funahashi, Masahiro Kawamura
  • Organic luminescent medium and organic EL device
    Patent number: 8450727
    Abstract: Provided is an organic luminescent medium containing a specific diaminopyrene derivative and a specific anthracene derivative. Also provided are an organic electroluminescence device capable of emitting light having a short wavelength (such as blue light) with high luminous efficiency and having a long lifetime by having such constitution that the organic EL device contains one or more organic thin film layers including a light emitting layer between a cathode and an anode, and at least one layer of the organic thin film layers contains the organic luminescent medium, and an organic luminescent medium that can be used in an organic thin film layer of the organic EL device.
    Type: Grant
    Filed: February 16, 2009
    Date of Patent: May 28, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Masahiro Kawamura, Masakazu Funahashi, Mitsunori Ito
  • Aromatic amine derivative, and organic electroluminescent element comprising the same
    Patent number: 8431250
    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: April 23, 2010
    Date of Patent: April 30, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Yumiko Mizuki, Masakazu Funahashi, Masahiro Kawamura
  • ORGANIC ELECTROLUMINESCENCE DEVICE AND ORGANIC LIGHT EMITTING MEDIUM
    Publication number: 20130069523
    Abstract: An organic electroluminescence device having a layer of an organic light emitting medium which comprises (A) a specific arylamine compound and (B) at least one compound selected from specific anthracene derivatives, spirofluorene derivatives, compounds having condensed rings and metal complex compounds and is disposed between a pair of electrodes and an organic light emitting medium comprising the above components (A) and (B) are provided. The organic electroluminescence device exhibits a high purity of color, has excellent heat resistance and a long life and efficiently emits bluish to yellowish light. The organic light emitting medium can be advantageously used for the organic electroluminescence device.
    Type: Application
    Filed: November 13, 2012
    Publication date: March 21, 2013
    Inventors: Masahide MATSUURA, Masakazu Funahashi, Kenichi Fukuoka, Chishio Hosokawa
  • Aromatic amine derivative and organic electroluminescence device using the same
    Patent number: 8367869
    Abstract: To attain an organic electroluminescence device having a long lifetime and high luminous efficiency, and is capable of emitting blue light having a high color purity, and an aromatic amine derivative for realizing the device, the present invention provides an aromatic amine derivative having a specific structure, and an organic electroluminescence device including an organic thin film layer composed of one or more layers including at least a light emitting layer and interposed between a cathode and an anode, in which at least one layer of the organic thin film layer contains the aromatic amine derivative alone or as a component of a mixture.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: February 5, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Chishio Hosokawa, Yoriyuki Takashima, Masakazu Funahashi
  • Organic electroluminescence device and organic light emitting medium
    Patent number: 8334648
    Abstract: An organic electroluminescence device having a layer of an organic light emitting medium which comprises (A) a specific arylamine compound and (B) at least one compound selected from specific anthracene derivatives, spirofluorene derivatives, compounds having condensed rings and metal complex compounds and is disposed between a pair of electrodes and an organic light emitting medium comprising the above components (A) and (B) are provided. The organic electroluminescence device exhibits a high purity of color, has excellent heat resistance and a long life and efficiently emits bluish to yellowish light. The organic light emitting medium can be advantageously used for the organic electroluminescence device.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: December 18, 2012
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Masahide Matsuura, Masakazu Funahashi, Kenichi Fukuoka, Chishio Hosokawa
  • Organic electroluminescence device and organic light emitting medium
    Patent number: 8324802
    Abstract: An organic electroluminescence device having a layer of an organic light emitting medium which comprises (A) a specific arylamine compound and (B) at least one compound selected from specific anthracene derivatives, spirofluorene derivatives, compounds having condensed rings and metal complex compounds and is disposed between a pair of electrodes and an organic light emitting medium comprising the above components (A) and (B) are provided. The organic electroluminescence device exhibits a high purity of color, has excellent heat resistance and a long life and efficiently emits bluish to yellowish light. The organic light emitting medium can be advantageously used for the organic electroluminescence device.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: December 4, 2012
    Assignee: Idemitsu Kosan, Co., Ltd.
    Inventors: Masahide Matsuura, Masakazu Funahashi, Kenichi Fukuoka, Chishio Hosokawa
  • Asymmetric pyrene derivative and organic electroluminescence device employing the same
    Patent number: 8318995
    Abstract: Asymmetric pyrene derivatives having specific structure. An organic EL device comprising at least one organic thin film layer including a light emitting layer sandwiched between a pair of electrode consisting of an anode and a cathode, wherein the organic thin film layer comprises at least one kind selected from the aforementioned asymmetric pyrene derivatives singly or as a component of mixture thereof. An organic EL device exhibiting a great efficiency of light emission and having a long lifetime, and also asymmetric pyrene derivatives for realizing the organic EL device are provided.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: November 27, 2012
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Mineyuki Kubota, Masakazu Funahashi, Chishio Hosokawa
  • Organic electroluminescence device and anthracene derivative
    Patent number: 8318324
    Abstract: An anthracene derivative having a specific asymmetric structure is provided. The asymmetric anthracenes are useful in an organic electroluminescence device and exhibit efficient light emission and a long performance lifetime.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: November 27, 2012
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hidetsugu Ikeda, Motohisa Ido, Masakazu Funahashi
  • Organic EL device
    Patent number: 8294142
    Abstract: An organic EL device includes: an anode; a cathode and an organic thin-film layer provided between the anode and the cathode. The organic thin-film layer includes: a fluorescent-emitting layer containing a fluorescent host and a fluorescent dopant; and a phosphorescent-emitting layer containing a first phosphorescent host and a first phosphorescent dopant. The first phosphorescent dopant emits light by receiving exited triplet energy transferred from the fluorescent host. The fluorescent host has a substituted or unsubstituted polycyclic fused aromatic skeleton and has an exited triplet energy gap of 2.10 eV to 3.00 eV.
    Type: Grant
    Filed: July 4, 2008
    Date of Patent: October 23, 2012
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kazuki Nishimura, Toshihiro Iwakuma, Masahiro Kawamura, Kenichi Fukuoka, Chishio Hosokawa, Masakazu Funahashi
  • ORGANIC ELECTROLUMINESCENCE DEVICE AND ANTHRACENE DERIVATIVE
    Publication number: 20120235561
    Abstract: An anthracene derivative having a specific asymmetric structure is provided. The asymmetric anthracenes are useful in an organic electroluminescence device and exhibit efficient light emission and a long performance lifetime.
    Type: Application
    Filed: May 29, 2012
    Publication date: September 20, 2012
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Hidetsugu IKEDA, Motohisa IDO, Masakazu FUNAHASHI
  • Chrysene derivative and organic electroluminescent device using the same
    Patent number: 8221907
    Abstract: A chrysene derivative shown by the following formula: wherein R1 to R10 and R21 to R25 are independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 ring carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 8 to 30 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 ring carbon atoms, provided that at least one of R21 to R25 is a substituted or unsubstituted fused aromatic ring group having 10 to 20 ring carbon atoms or a substituted or unsubstituted fluorenyl group.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: July 17, 2012
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Masahiro Kawamura, Kazuki Nishimura, Toshihiro Iwakuma, Kenichi Fukuoka, Chishio Hosokawa, Masakazu Funahashi, Tetsuya Inoue, Yukitoshi Jinde, Yuichiro Kawamura, Mitsunori Ito, Yoriyuki Takashima, Toshinari Ogiwara
  • ORGANIC ELECTROLUMINESCENCE DEVICE
    Publication number: 20120153815
    Abstract: A material for an organic electroluminescence device having the formula: wherein Ar1 and Ar3 each independently represent a substituted or unsubstituted phenylene group, X5 represents a substituted or unsubstituted naphthyl group or a substituted or unsubstituted phenanthryl group, X6 represents a substituted or unsubstituted phenyl group, and X7 and X8 each independently represent a substituted or unsubstituted biphenyl group or a substituted or unsubstituted terphenyl group. An organic electroluminescence device having (i) a light emitting layer, or (ii) a plurality of thin films of organic compounds having a light emitting layer, disposed between a pair of electrodes, wherein at least one of the thin films of organic compounds is a layer containing the material having the formula above.
    Type: Application
    Filed: January 31, 2012
    Publication date: June 21, 2012
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Chishio Hosokawa, Masakazu Funahashi, Hisayuki Kawamura, Hiromasa Arai, Hidetoshi Koga, Hidetsugu Ikeda