Patents by Inventor Kiyoshi Ikeda

Kiyoshi Ikeda 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: 20080241588
    Abstract: In an organic electroluminescence device including a cathode and an anode, at least an emitting layer and an electron transporting layer are provided between the cathode and the anode. The emitting layer contains a host material formed of a naphthacene derivative represented by the following formula (1) and a dopant material formed of a diketopyrolopyrrol derivative represented by the following formula (2). The electron transporting layer is preferably a benzoimidazole derivative.
    Type: Application
    Filed: March 7, 2008
    Publication date: October 2, 2008
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Chishio Hosokawa, Takayasu Sado, Kiyoshi Ikeda
  • Publication number: 20080111109
    Abstract: An organic EL material-containing solution contains an organic EL material and a solvent. The organic EL material contains a host and a dopant, the host being a naphthacene compound having a solubility in the solvent of 0.5 wt % or higher. The solvent is selected from the group consisting of an aromatic solvent, a halogen type solvent and an ether type solvent.
    Type: Application
    Filed: November 28, 2006
    Publication date: May 15, 2008
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Tetsuya Inoue, Kiyoshi Ikeda, Mitsunori Ito, Chishio Hosokawa
  • Publication number: 20080007160
    Abstract: An organic electroluminescent device including an anode (20), a cathode (80), and at least an emitting layer (50) and an electron-transporting layer (60) provided between the anode (20) and the cathode (80); the emitting layer (50) containing a host material which is a fluoranthene derivative represented by the following formula (1) and a dopant material which is an indenoperylene derivative: wherein Ar is a substituted or unsubstituted aromatic group having 6 to 50 nucleus carbon atoms; and Rs are independently a hydrogen atom, substituted or unsubstituted aromatic group having 6 to 50 nucleus carbon atoms, or substituted or unsubstituted alkyl group having 1 to 50 carbon atoms.
    Type: Application
    Filed: February 27, 2007
    Publication date: January 10, 2008
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Takayasu Sado, Kiyoshi Ikeda, Takashi Arakane, Chishio Hosokawa
  • Publication number: 20070275266
    Abstract: An organic electroluminescent device including an anode (1), a first emitting layer (3), a carrier barrier layer (4), a second emitting layer (5), and a cathode (7) stacked in that order; the first emitting layer (3) including a host material of a compound represented by X—(Y)n, and a dopant material of a compound containing a fluoranthene skeleton or a perylene skeleton; the affinity level of the carrier barrier layer (4) being smaller than the affinity level of the second emitting layer (5) in an amount of 0.2 eV or more; and the ionization potential (Ie1) of the carrier barrier layer (4) and the ionization potential (Ih1) of the first emitting layer (3) satisfying Ie1<Ih1+0.1 (eV).
    Type: Application
    Filed: June 27, 2006
    Publication date: November 29, 2007
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Yukitoshi Jinde, Hitoshi Kuma, Kiyoshi Ikeda, Mitsunori Ito
  • Publication number: 20070243411
    Abstract: Provided is an organic electroluminescence device having a long lifetime and capable of emitting blue light with high luminous efficiency. The organic electroluminescence device has an organic thin film layer composed of one or multiple layers including at least a light emitting layer and interposed between a cathode and an anode. In the organic electroluminescence device, the light emitting layer contains at least one kind selected from compounds each having a specific fluoranthene structure and at least one kind selected from fused ring-containing compounds each having a specific structure.
    Type: Application
    Filed: February 27, 2007
    Publication date: October 18, 2007
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Yoriyuki Takashima, Masakazu Funahashi, Kiyoshi Ikeda, Chishio Hosokawa
  • Publication number: 20070222373
    Abstract: A material for an organic EL device conatining a novel naphthacene derivative; a luminescent material containing a novel naphthacene derivative; and an organic electroluminescent device including one or more organic layers interposed between a cathode and an anode, and at least one layer of the organic layers containing a naphthacene derivative represented by the following formula (1) or (2).
    Type: Application
    Filed: February 27, 2007
    Publication date: September 27, 2007
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Takashi Arakane, Kiyoshi Ikeda, Hiroshi Yamamoto, Takayasu Sado, Chishio Hosokawa
  • Publication number: 20070224448
    Abstract: Provided is an organic electroluminescence device having high luminous efficiency, high heat resistance and an extremely long lifetime. The organic electroluminescence device of the present invention includes an organic thin film layer composed of one or more layers containing at least a light emitting layer is interposed between a cathode and an anode. The light emitting layer includes a compound containing a condensed ring and a luminescent metal complex capable of emitting light having a red-based color. It is preferable that the compound containing a condensed ring includes a host material, while the luminescent metal complex capable of emitting light having a red-based color includes a phosphorescent dopant.
    Type: Application
    Filed: May 6, 2005
    Publication date: September 27, 2007
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Kiyoshi Ikeda, Mitsunori Ito, Takashi Arakane
  • Publication number: 20070196688
    Abstract: An organic electroluminescent device including: a cathode, an anode, and an organic thin film layer provided between the cathode and the anode, the organic thin layer including one or plural layers including an emitting layer; at least one layer of the organic thin film layer including an indenoperylene compound having at least one substituent on the central perylene ring, and a compound having a condensed aromatic ring with 10 to 50 nucleus carbon atoms.
    Type: Application
    Filed: November 24, 2006
    Publication date: August 23, 2007
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Kiyoshi Ikeda, Mitsunori Ito
  • Publication number: 20070190355
    Abstract: Provided is a material for an organic electroluminescence (EL) device having high luminous efficiency, high thermostability, and a long lifetime, and an organic EL device utilizing the same. The material for an organic EL device is composed of a compound of a specified structure having a nitrogenous ring. The organic EL device has an organic thin film layer composed of one or more layers including at least a light emitting layer, the organic thin film layer being interposed between a cathode and an anode. In the organic EL device, at least one layer of the organic thin film layer contains the material for an organic EL device.
    Type: Application
    Filed: March 4, 2005
    Publication date: August 16, 2007
    Applicant: Idemitsu Kosan Co., Ltd
    Inventors: Kiyoshi Ikeda, Seiji Tomita, Takashi Arakane, Mitsunori Ito
  • Publication number: 20070190356
    Abstract: A material for an organic electroluminescence device includes a compound composed of a specific structure showing enhanced steric hindrance. An organic electroluminescence device includes an organic thin film layer composed of one or more layers including at least a light emitting layer, the organic thin film layer is sandwiched between a cathode and an anode, in which at least one layer of the organic thin film layer contains the material for organic electroluminescence device. There are provided the organic electroluminescence device and the material for an organic electroluminescence device having a high luminescent efficiency, excellent heat resistance, and a long lifetime.
    Type: Application
    Filed: March 14, 2005
    Publication date: August 16, 2007
    Inventors: Takashi Arakane, Toshihiro Iwakuma, Hidetsugu Ikeda, Hiroaki Nakamura, Ryusuke Watanabe, Kiyoshi Ikeda
  • Publication number: 20070172698
    Abstract: Provided is an organic electroluminescent device in which an organic thin film layer comprising a single layer or plural layers comprising a phosphorescence light-emitting layer containing at least a host material and a phosphorescent organic metal complex is interposed between a cathode and an anode, wherein the total of the halogen element mass concentrations of bromine, iodine and chlorine which are contained as impurities in the host material constituting the light-emitting layer described above is 50 ppm or less. It has a high emission luminance, a high luminous efficiency and a long life.
    Type: Application
    Filed: March 1, 2005
    Publication date: July 26, 2007
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Toshihiro Iwakuma, Hiroya Yasuda, Kiyoshi Ikeda, Keiko Yamamichi, Takashi Arakane, Chishio Hosokawa
  • Publication number: 20070116130
    Abstract: An apparatus is provided for encoding input moving picture signals using a 2-pass variable bit rate system.
    Type: Application
    Filed: September 7, 2006
    Publication date: May 24, 2007
    Applicant: Sony Corporation
    Inventors: Tadahito Koizumi, Masashi Ohta, Masami Tomita, Hiromasa Naganuma, Kiyoshi Ikeda, Takashi Karimoto
  • Publication number: 20070116982
    Abstract: A compound for obtaining an organic electroluminescence device having a long life of light emission and exhibiting excellent heat resistance is provided. The compound is a host material for organic electroluminescence devices comprising a carbazole derivative.
    Type: Application
    Filed: January 18, 2005
    Publication date: May 24, 2007
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Hiroaki Nakamura, Takashi Arakane, Toshihiro Iwakuma, Kiyoshi Ikeda, Hidetsugu Ikeda, Mineyuki Kubota
  • Patent number: 7072485
    Abstract: A meshed etching tunnel made of aluminum is disposed inside a cylindrical quartz reactive chamber, and speaker diaphragms are aligned inside the tunnel at a certain interval. Opposing electrodes are disposed outside the reactive chamber. Plasma is applied at low temperature to prevent heat deformation. Uniform wettability is also assured by the use of the meshed etching tunnel, achieving high productivity. Uniform wettability further stabilizes bonding and improves bonding strength of the speaker diaphragm onto the voice coil and edge, offering a speaker with improved input power durability.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: July 4, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hitoshi Sato, Sinya Mizone, Kiyoshi Ikeda, Hiroko Yamazaki
  • Publication number: 20050004940
    Abstract: The present invention relates to an apparatus and a method for information processing that suppress disturbance occurring when a splice point of spliced stream data is reproduced. A DTS of a TS stream is generated by adding a counter value for one frame by an adder 57. A PTS is generated according to a type of the picture on the basis of the DTS. For an I-picture and a P-picture, the PTS is generated by adding a counter value for three frames to the DTS, whereas for a B-picture, the DTS is generated as the PTS. A PCR is generated by the adder 57 on the basis of the number of pictures in a period from detection of an immediately preceding PCR to detection of the present PCR, as a value resulting from adding a value obtained by multiplying the number of pictures by 3003 to an STC of the immediately preceding PCR. A data replacing unit 72 replaces original values with the generated DTS, PTS, and PCR, and then outputs the result.
    Type: Application
    Filed: January 8, 2003
    Publication date: January 6, 2005
    Inventor: Kiyoshi Ikeda
  • Patent number: 6756414
    Abstract: This invention provides a polymer polyol composition (I) comprising a polyol (A) and polymer particles (B) dispersed in (A), the polymer particles (B) being formed by polymerizing an ethylenically unsaturated compound (b) in a polyol, wherein the content of (B) in (I) is from 35 to 75 mass %, based on the mass of (I), and the amount of soluble polymers (P) dissolved in (A) is not more than 5 mass %, based on the mass of (A), and provides methods for producing the polymer polyol composition (I). Further, this invention provides a method for producing a foamed or non-foamed polyurethane resin, which method comprises reacting a polyol component with a polyisocyanate component in the presence or absence of a blowing agent, wherein the above polymer polyol composition is used at least as a portion of the polyol component.
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: June 29, 2004
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Tetsuji Kawamoto, Tomio Kawazoe, Kiyoshi Ikeda, Munekazu Satake, Futoshi Kitatani, Tsuyoshi Tomosada, Takeshi Furuta, Takayuki Tsuji
  • Patent number: 6757404
    Abstract: A diaphragm is gained by the co-molded of a dome part, a voice coil junction part, a cone part and a peripheral part through the injection mold of thermoplastic resin. The thickness of the central part of the dome is made great so that the resonance amplitude in this part becomes small. In addition, an annular rib is integrally provided to the voice coil junction part so as to increase the junction strength between the diaphragm and the voice coil bobbin. Thus, the electromagnetic driving force of the voice coil can be effectively transmitted to the diaphragm so that a loud speaker with excellent characteristics can be gained.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: June 29, 2004
    Assignee: Matsushita Electric industrial Co., Ltd.
    Inventors: Hiroyuki Takewa, Mikio Iwasa, Mitsukazu Kuze, Shinya Tabata, Shinya Mizone, Yoshiyuki Takahashi, Satoshi Koura, Takashi Suzuki, Teruo Doi, Kiyoshi Ikeda, Hiroko Yamazaki
  • Publication number: 20040094357
    Abstract: A method for manufacturing a speaker diaphragm used for a range of audio equipment, a speaker diaphragm made using this manufacturing method, and a speaker employing such diaphragm. This manufacturing method for a speaker diaphragm offers good productivity, preventing deviation in wettability and heat deformation of speaker diaphragms in plasma treatment, and also offers a speaker with good input power durability. A meshed etching tunnel (2) made of aluminum is disposed inside a cylindrical quartz reactive chamber (1), and speaker diaphragms (4) are aligned inside the tunnel at a certain interval. Opposing electrodes (5) are disposed outside the reactive chamber (1). Plasma is applied at low temperature to prevent heat deformation. Uniform wettability is also assured by the use of the meshed etching tunnel (2), achieving high productivity.
    Type: Application
    Filed: July 3, 2003
    Publication date: May 20, 2004
    Inventors: Hitoshi Sato, Sinya Mizone, Kiyoshi Ikeda, Hiroko Yamazaki
  • Publication number: 20040094356
    Abstract: A method for manufacturing a speaker diaphragm used for a range of audio equipment, a speaker diaphragm made using this manufacturing method, and a speaker employing such diaphragms. This manufacturing method for a speaker diaphragm offers good productivity, preventing deviation in wettability and heat deformation of speaker diaphragms in plasma treatment, and also offers a speaker with good input power durability. A meshed etching tunnel (2) made of aluminum is disposed inside a cylindrical quartz reactive chamber (1), and speaker diaphragms (4) are aligned inside the tunnel at a certain interval. Opposing electrodes (5) are disposed outside the reactive chamber (1). Plasma is applied at low temperature to prevent heat deformation. Uniform wettability is also assured by the use of the meshed etching tunnel (2), achieving high productivity.
    Type: Application
    Filed: July 3, 2003
    Publication date: May 20, 2004
    Inventors: Hitoshi Sato, Sinya Mizone, Kiyoshi Ikeda, Hiroko Yamazaki
  • Patent number: 6680430
    Abstract: A speaker edge is made of a thermosetting composition consisting of a polyurethane prepolymer and an inactivated solid polyamine as a latent hardener. A gas is dispersed in the thermosetting composition, prior to feed into a mold, so that it can foam and solidify to give the speaker edge. In a method of making the speaker edge, the composition will be injected into a female mold segment heated below the critical thermosetting temperature, foaming the composition. Then placed in the female segment is a male segment heated above the critical temperature, causing the ingredients to react with each other to solidify in the mold.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: January 20, 2004
    Assignees: Matsushita Electric Industrial Co., Ltd., Sunstar Engineering, Inc.
    Inventors: Shinya Tabata, Shinya Mizone, Yoshiyuki Takahashi, Kiyoshi Ikeda, Hiroko Yamazaki, Shinji Okuda, Masaharu Takada