Patents by Inventor Shigeki Ooma

Shigeki Ooma 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: 20140225058
    Abstract: To provide a rectifying device equipped with a carrier transporter excellent in high frequency responsiveness and heat resistance, an electronic circuit using the same, and a method of manufacturing the rectifying device. The rectifying device includes a pair of electrodes, and a carrier transporter arranged between the pair of electrodes and composed of one or multiple carbon nanotubes. In order that a first interface between one electrode of the pair of electrodes and the carrier transporter and a second interface between the other electrode of the pair of electrodes and the carrier transporter may have different barrier levels, connection configuration of them are made different.
    Type: Application
    Filed: April 22, 2014
    Publication date: August 14, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shinsuke OKADA, Masaki HIRAKATA, Chikara MANABE, Kazunori ANAZAWA, Taishi SHIGEMATSU, Miho WATANABE, Kentaro KISHI, Takashi ISOZAKI, Shigeki OOMA, Hiroyuki WATANABE
  • Patent number: 8052952
    Abstract: Provided is a nanotube-polymer composite which can effectively utilize characteristics of a carbon nanotube structure. The composite includes a carbon nanotube structure and a polymer, in which: the carbon nanotube structure has a network structure constructed by mutually cross-linking functional groups bonded to multiple carbon nanotubes through chemical bonding of the functional groups together; and the polymer is filled in the network structure.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: November 8, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Miho Watanabe, Kentaro Kishi, Chikara Manabe, Kazunori Anazawa, Masaki Hirakata, Taishi Shigematsu, Hiroyuki Watanabe, Takashi Isozaki, Shigeki Ooma, Shinsuke Okada
  • Patent number: 8048490
    Abstract: Provided are a carbon nanotube structure more excellent in electric conductivity, thermal conductivity, and mechanical strength, and a method of manufacturing the carbon nanotube structure. A carbon nanotube composite structure is characterized by including: a first carbon nanotube structure in which functional groups bonded to plural carbon nanotubes are chemically bonded and mutually cross-linked to construct a network structure; and a second carbon nanotube structure in which functional groups bonded to plural carbon nanotubes are chemically bonded and mutually cross-linked to construct a network structure, the second carbon nanotube structure being combined with the network structure of the first carbon nanotube structure.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: November 1, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Miho Watanabe, Chikara Manabe, Taishi Shigematsu, Kazunori Anazawa, Takashi Isozaki, Kentaro Kishi, Masaki Hirakata, Shigeki Ooma, Shinsuke Okada, Hiroyuki Watanabe
  • Publication number: 20100137502
    Abstract: Provided is a nanotube-polymer composite which can effectively utilize characteristics of a carbon nanotube structure. The composite includes a carbon nanotube structure and a polymer, in which: the carbon nanotube structure has a network structure constructed by mutually cross-linking functional groups bonded to multiple carbon nanotubes through chemical bonding of the functional groups together; and the polymer is filled in the network structure.
    Type: Application
    Filed: February 1, 2010
    Publication date: June 3, 2010
    Applicant: Fuji Xerox Co., LTD.
    Inventors: Miho Watanabe, Kentaro Kishi, Chikara Manabe, Kazunori Anazawa, Masaki Hirakata, Taishi Shigematsu, Hiroyuki Watanabe, Takashi Isozaki, Shigeki Ooma, Shinsuke Okada
  • Patent number: 7695769
    Abstract: Provided is a nanotube-polymer composite which can effectively utilize characteristics of a carbon nanotube structure. The composite includes a carbon nanotube structure and a polymer, in which: the carbon nanotube structure has a network structure constructed by mutually cross-linking functional groups bonded to multiple carbon nanotubes through chemical bonding of the functional groups together; and the polymer is filled in the network structure.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: April 13, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Miho Watanabe, Kentaro Kishi, Chikara Manabe, Kazunori Anazawa, Masaki Hirakata, Taishi Shigematsu, Hiroyuki Watanabe, Takashi Isozaki, Shigeki Ooma, Shinsuke Okada
  • Patent number: 7592050
    Abstract: A method for producing a carbon nanotube thin film comprises a step of dropping a mixed liquid containing carbon nanotubes and an ionic liquid onto a liquid surface of a film forming liquid to spread the carbon nanotubes on the liquid surface.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: September 22, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Miho Watanabe, Chikara Manabe, Taishi Shigematsu, Masaki Hirakata, Shinsuke Okada, Shigeki Ooma
  • Publication number: 20090197002
    Abstract: Provided are a carbon nanotube structure more excellent in electric conductivity, thermal conductivity, and mechanical strength, and a method of manufacturing the carbon nanotube structure. A carbon nanotube composite structure is characterized by including: a first carbon nanotube structure in which functional groups bonded to plural carbon nanotubes are chemically bonded and mutually cross-linked to construct a network structure; and a second carbon nanotube structure in which functional groups bonded to plural carbon nanotubes are chemically bonded and mutually cross-linked to construct a network structure, the second carbon nanotube structure being combined with the network structure of the first carbon nanotube structure.
    Type: Application
    Filed: February 20, 2009
    Publication date: August 6, 2009
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Miho Watanabe, Chikara Manabe, Taishi Shigematsu, Kazunori Anazawa, Takashi Isozaki, Kentaro Kishi, Masaki Hirakata, Shigeki Ooma, Shinsuke Okada, Hiroyuki Watanabe
  • Patent number: 7382041
    Abstract: A method of producing an organic-inorganic composite insulating material for electronic element comprises subjecting a mixture of an organic polymer or its solution and a metal alkoxide or its solution as a starting material to sol-gel reaction of the metal alkoxide in the presence of the organic polymer.
    Type: Grant
    Filed: July 5, 2005
    Date of Patent: June 3, 2008
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Shinsuke Okada, Masaki Hirakata, Miho Watanabe, Taishi Shigematsu, Shigeki Ooma, Chikara Manabe
  • Patent number: 7368009
    Abstract: A carbon fine particle structure containing plural carbon fine particles having a graphite structure and a crosslinked part containing plural functional groups chemically bonded to each other, at least one ends of each of the functional groups being connected to different carbon fine particles, the plural carbon fine particles and the crosslinked part constituting a network structure, and a process for producing the same are provided. A carbon fine particle transcriptional body and a solution for producing the carbon fine particle structure, an carbon fine particle structure electronic device using the carbon fine particle structure and a process for producing the same, and an integrated circuit using the same are provided.
    Type: Grant
    Filed: January 13, 2005
    Date of Patent: May 6, 2008
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Shinsuke Okada, Masaki Hirakata, Chikara Manabe, Kazunori Anazawa, Taishi Shigematsu, Miho Watanabe, Kentarou Kishi, Takashi Isozaki, Shigeki Ooma, Hiroyuki Watanabe
  • Patent number: 7355334
    Abstract: An electron beam generator device includes a base body having a conductive surface and a electron-emission electrode having a carbon nanotube structure on the conductive surface of the substrate. The carbon nanotube structure constitutes a network structure which has plural carbon nanotubes and a crosslinked part including a chemical bond of plural functional groups. The chemical bond connects one end of one of the carbon nanotubes to another one of the carbon nanotubes. A method for producing an electron beam generator device, includes applying plural carbon nanotubes each having a functional group onto a conductive surface of a base body, and crosslinking the functional groups with a chemical bond to form a crosslinked part, thereby forming a carbon nanotube structure constituting a network structure having plural carbon nanotubes electrically connected to each other.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: April 8, 2008
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kazunori Anazawa, Chikara Manabe, Kentaro Kishi, Taishi Shigematsu, Miho Watanabe, Masaki Hirakata, Takashi Isozaki, Hiroyuki Watanabe, Shigeki Ooma, Shinsuke Okada
  • Publication number: 20080053952
    Abstract: A rectifying device comprising a pair of electrodes, and a carrier transporter consisting of one or more of carbon nanotubes provided between the pair of electrodes wherein high frequency response and heat resistance of the carrier transporter are enhanced by differentiating two connection structures such that the barrier level between one electrode and the first interface of the carrier transporter is different from the barrier level between the other electrode and the second interface of the carrier transporter. An electronic circuit employing such a rectifying device and a process for producing the rectifying device are also provided.
    Type: Application
    Filed: May 20, 2004
    Publication date: March 6, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shinsuke Okada, Masaki Hirakata, Chikara Manabe, Kazunori Anazawa, Taishi Shigematsu, Miho Watanabe, Kentaro Kishi, Takashi Isozaki, Shigeki Ooma, Hiroyuki Watanabe
  • Patent number: 7244373
    Abstract: To provide a composite excellent in mechanical strength or in electric conductivity and obtained by combining a carbon nanotube structure and ceramics, and a method of manufacturing the same. The composite is composed of the carbon nanotube structure and the ceramics, and, in the carbon nanotube carbon nanotube structure, functional groups bonded to multiple carbon nanotubes are chemically bonded to mutually cross-link to construct a network structure.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: July 17, 2007
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kazunori Anazawa, Chikara Manabe, Masaki Hirakata, Kentaro Kishi, Taishi Shigematsu, Miho Watanabe, Hiroyuki Watanabe, Takashi Isozaki, Shigeki Ooma, Shinsuke Okada
  • Patent number: 7244374
    Abstract: Provided are: a composite formed by mixing a carbon nanotube structure and a metal-containing material, the carbon nanotube structure having a network structure constructed by mutually cross-linking functional groups bonded to plural carbon nanotubes through chemical bonding of the functional groups together; and a method of manufacturing the same. The composite of the carbon nanotube and the metal-containing material is capable of effectively using characteristics of the carbon nanotube structure.
    Type: Grant
    Filed: August 3, 2004
    Date of Patent: July 17, 2007
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kazunori Anazawa, Chikara Manabe, Masaki Hirakata, Kentaro Kishi, Taishi Shigematsu, Miho Watanabe, Takashi Isozaki, Hiroyuki Watanabe, Shigeki Ooma, Shinsuke Okada
  • Publication number: 20070145335
    Abstract: To provide a composite excellent in mechanical strength or in electric conductivity and obtained by combining a carbon nanotube structure and ceramics, and a method of manufacturing the same. The composite is composed of the carbon nanotube structure and the ceramics, and, in the carbon nanotube carbon nanotube structure, functional groups bonded to multiple carbon nanotubes are chemically bonded to mutually cross-link to construct a network structure.
    Type: Application
    Filed: February 4, 2004
    Publication date: June 28, 2007
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Kazunori Anazawa, Chikara Manabe, Masaki Hirakata, Kentaro Kishi, Taishi Shigematsu, Miho Watanabe, Hiroyuki Watanabe, Takashi Isozaki, Shigeki Ooma, Shinsuke Okada
  • Patent number: 7217374
    Abstract: To provide a resistance element having an electric resistance body with excellent stability and a method of manufacturing the same. The resistance element includes an electric resistance body, on a base body surface, consisting of a carbon nanotube structure layer 14, which configures a mesh structure in which at least plural carbon nanotubes are cross-linked to one another. The method of manufacturing the resistance element includes: an applying step of applying the base body surface 12 with a liquid solution containing carbon nanotubes having functional groups; and a cross-linking step of forming the carbon nanotube structure layer 14, used as an electric resistance body, that configures a mesh structure in which the plural carbon nanotubes are cross-linked to one another through curing of the liquid solution after application.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: May 15, 2007
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Miho Watanabe, Masaki Hirakata, Kazunori Anazawa, Chikara Manabe, Kentaro Kishi, Taishi Shigematsu, Takashi Isozaki, Hiroyuki Watanabe, Shigeki Ooma, Shinsuke Okada
  • Patent number: 7081429
    Abstract: Provided are a gas decomposing unit and an electrode for a fuel cell capable of stably supporting a gas decomposing catalyst. A gas decomposing unit and an electrode for a fuel cell each including: a carbon nanotube structure having a mesh structure in which functional groups bonded to plural carbon nanotubes are chemically bonded to mutually cross-link the plural carbon nanotubes; and a gas decomposing catalyst supported on the carbon nanotube structure. A method of manufacturing a gas decomposing unit characterized by including: an applying step of applying, to the surface of a substrate, a solution containing plural carbon nanotubes to which functional groups are bonded; a cross-linking step of chemically bonding the functional groups to build a mesh structure in which the plural carbon nanotubes mutually cross-link; and a supporting step of forming the carbon nanotube structure supporting a gas decomposing catalyst.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: July 25, 2006
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kentaro Kishi, Kazunori Anazawa, Chikara Manabe, Masaki Hirakata, Taishi Shigematsu, Miho Watanabe, Hiroyuki Watanabe, Takashi Isozaki, Shigeki Ooma, Shinsuke Okada
  • Publication number: 20060138404
    Abstract: A method of producing an organic-inorganic composite insulating material for electronic element comprises subjecting a mixture of an organic polymer or its solution and a metal alkoxide or its solution as a starting material to sol-gel reaction of the metal alkoxide in the presence of the organic polymer.
    Type: Application
    Filed: July 5, 2005
    Publication date: June 29, 2006
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shinsuke Okada, Masaki Hirakata, Miho Watanabe, Taishi Shigematsu, Shigeki Ooma, Chikara Manabe
  • Publication number: 20060134326
    Abstract: A method for producing a carbon nanotube thin film comprises a step of dropping a mixed liquid containing carbon nanotubes and an ionic liquid onto a liquid surface of a film forming liquid to spread the carbon nanotubes on the liquid surface.
    Type: Application
    Filed: June 3, 2005
    Publication date: June 22, 2006
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Miho Watanabe, Chikara Manabe, Taishi Shigematsu, Masaki Hirakata, Shinsuke Okada, Shigeki Ooma
  • Publication number: 20060118777
    Abstract: The present invention provides an electronic device including a transporting layer which involves a low environmental load and which is excellent in semiconductor characteristics by means of a configuration having, on the surface of a base body, at least a transporting layer constituted by a carbon nanotube structure layer having a network structure in which a plurality of carbon nanotubes mutually cross-link. Also, provided is a method of manufacturing the same.
    Type: Application
    Filed: December 17, 2003
    Publication date: June 8, 2006
    Inventors: Masaki Hirakata, Takashi Isozaki, Kentaro Kishi, Taishi Shigematsu, Miho Watanabe, Chikara Manabe, Kazunori Anazawa, Hiroyuki Watanabe, Shinsuke Okada, Shigeki Ooma
  • Publication number: 20050284336
    Abstract: A carbon fine particle structure containing plural carbon fine particles having a graphite structure and a crosslinked part containing plural functional groups chemically bonded to each other, at least one ends of each of the functional groups being connected to different carbon fine particles, the plural carbon fine particles and the crosslinked part constituting a network structure, and a process for producing the same are provided. A carbon fine particle transcriptional body and a solution for producing the carbon fine particle structure, an carbon fine particle structure electronic device using the carbon fine particle structure and a process for producing the same, and an integrated circuit using the same are provided.
    Type: Application
    Filed: January 13, 2005
    Publication date: December 29, 2005
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shinsuke Okada, Masaki Hirakata, Chikara Manabe, Kazunori Anazawa, Taishi Shigematsu, Miho Watanabe, Kentarou Kishi, Takashi Isozaki, Shigeki Ooma, Hiroyuki Watanabe