Patents by Inventor Masaya Terai

Masaya Terai 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: 8633526
    Abstract: According to one embodiment, a nonvolatile semiconductor memory device includes a first stacked structure body, a first semiconductor layer, a first organic film, a first semiconductor-side insulating film, and a first electrode-side insulating film. The first stacked structure body includes a plurality of first electrode films stacked along a first direction and a first inter-electrode insulating film provided between the first electrode films. The first semiconductor layer is opposed to side faces of the first electrode films. The first organic film is provided between the side faces of the first electrode films and the first semiconductor layer and containing an organic compound. The first semiconductor-side insulating film is provided between the first organic film and the first semiconductor layer. The first electrode-side insulating film provided between the first organic film and the side faces of the first electrode films.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: January 21, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shigeki Hattori, Reika Ichihara, Masaya Terai, Hideyuki Nishizawa, Tsukasa Tada, Koji Asakawa, Hiroyuki Fuke, Satoshi Mikoshiba, Yoshiaki Fukuzumi, Hideaki Aochi
  • Publication number: 20140008601
    Abstract: An organic molecular memory of an embodiment includes a first conductive layer, a second conductive layer, and an organic molecular layer interposed between the first conductive layer and the second conductive layer, the organic molecular layer including variable-resistance molecular chains or charge-storage molecular chains, the variable-resistance molecular chains or the charge-storage molecular chains having electron-withdrawing substituents.
    Type: Application
    Filed: September 10, 2013
    Publication date: January 9, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hideyuki NISHIZAWA, Shigeki HATTORI, Masaya TERAI, Satoshi MIKOSHIBA, Koji ASAKAWA, Tsukasa TADA
  • Patent number: 8575587
    Abstract: A storage device includes: a plurality of first electrode wirings; a plurality of second electrode wirings which cross the first electrode wirings; a via plug which is formed between the second electrode wiring and the two adjacent first electrode wirings, and in which a maximum diameter of a bottom surface opposing the first electrode wirings in a direction vertical to a direction in which the first electrode wirings stretch is smaller than a length corresponding to a pitch of the first electrode wiring plus a width of the first electrode wirings; a first storage element which is formed between the via plug and one of the two first electrode wirings; and a second storage element which is formed between the via plug and the other one of the two first electrode wirings.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: November 5, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koji Asakawa, Shigeki Hattori, Hideyuki Nishizawa, Satoshi Mikoshiba, Reika Ichihara, Masaya Terai
  • Publication number: 20130248962
    Abstract: A nonvolatile semiconductor memory device of an embodiment includes: a semiconductor layer; an organic molecular layer formed on the semiconductor layer, the organic molecular layer including a plurality of organic molecules, each of the organic molecules includes a tunnel insulating unit of alkyl chain having one end bonded to the semiconductor layer, a charge storing unit, and a bonding unit configured to bond the other end of the alkyl chain to the charge storing unit; a block insulating film formed on the organic molecular layer; and a gate electrode formed on the block insulating film.
    Type: Application
    Filed: September 4, 2012
    Publication date: September 26, 2013
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Misako Morota, Hideyuki Nishizawa, Shigeki Hattori, Masaya Terai, Koji Asakawa
  • Publication number: 20130242670
    Abstract: A nonvolatile semiconductor storage device includes a semiconductor layer, a first insulating film formed on the semiconductor layer, a charge storage layer formed on the first insulating film and having fine metal grains, a second insulating film formed on the charge storage layer, and a gate electrode formed on the second insulating film. During a write operation, a differential voltage is applied across the gate electrode and the semiconductor layer to place the gate electrode at a lower voltage than the semiconductor layer and cause a positive electric charge to be stored in the charge storage layer.
    Type: Application
    Filed: August 31, 2012
    Publication date: September 19, 2013
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shigeki Hattori, Masakazu Yamagiwa, Masaya Terai, Hideyuki Nishizawa, Koji Asakawa, Yoshiaki Fukuzumi
  • Publication number: 20120251927
    Abstract: A hologram-recording medium containing: a recording layer containing a polymerizable monomer containing a structural framework represented by the following general formula (1). In general formula (1), X and Y are not the same, and X and Y are selected from hydrogen, iodine, bromine, and chlorine atoms and from methyl, ethyl, isopropyl, tert-butyl, phenyl, naphthyl, hydroxyl, methoxy, ethoxy, isopropoxy, tert-butoxy, phenoxy, naphthoxy, acetyl, carboxyl, acetoxy, thiophenyl, thionaphthyl, thiomethyl, thioethyl, thioisopropyl, thio-tert-butyl, and thiol groups; and W is selected from the group consisting of benzylvinyl, styryl, acryloyl, and methacryloyl groups.
    Type: Application
    Filed: June 15, 2012
    Publication date: October 4, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norikatsu Sasao, Kazuki Matsumoto, Rumiko Hayase, Yoshiaki Kawamonzen, Masahiro Kanamaru, Masaya Terai
  • Publication number: 20120241713
    Abstract: An organic molecular memory of an embodiment includes a first conductive layer, a second conductive layer, and an organic molecular layer interposed between the first conductive layer and the second conductive layer, the organic molecular layer including charge-storage molecular chains or variable-resistance molecular chains, the charge-storage molecular chains or the variable-resistance molecular chains including fused polycyclic groups.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 27, 2012
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hideyuki NISHIZAWA, Reiko YOSHIMURA, Tsukasa TADA, Shigeki HATTORI, Masaya TERAI, Satoshi MIKOSHIBA, Koji ASAKAWA
  • Publication number: 20120228576
    Abstract: A storage device includes: a plurality of first electrode wirings; a plurality of second electrode wirings which cross the first electrode wirings; a via plug which is formed between the second electrode wiring and the two adjacent first electrode wirings, and in which a maximum diameter of a bottom surface opposing the first electrode wirings in a direction vertical to a direction in which the first electrode wirings stretch is smaller than a length corresponding to a pitch of the first electrode wiring plus a width of the first electrode wirings; a first storage element which is formed between the via plug and one of the two first electrode wirings; and a second storage element which is formed between the via plug and the other one of the two first electrode wirings.
    Type: Application
    Filed: September 20, 2011
    Publication date: September 13, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koji Asakawa, Shigeki Hattori, Hideyuki Nishizawa, Satoshi Mikoshiba, Reika Ichihara, Masaya Terai
  • Publication number: 20120112171
    Abstract: According to one embodiment, a nonvolatile semiconductor memory device includes a first stacked structure body, a first semiconductor layer, a first organic film, a first semiconductor-side insulating film, and a first electrode-side insulating film. The first stacked structure body includes a plurality of first electrode films stacked along a first direction and a first inter-electrode insulating film provided between the first electrode films. The first semiconductor layer is opposed to side faces of the first electrode films. The first organic film is provided between the side faces of the first electrode films and the first semiconductor layer and containing an organic compound. The first semiconductor-side insulating film is provided between the first organic film and the first semiconductor layer. The first electrode-side insulating film provided between the first organic film and the side faces of the first electrode films.
    Type: Application
    Filed: September 16, 2011
    Publication date: May 10, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shigeki Hattori, Reika Ichihara, Masaya Terai, Hideyuki Nishizawa, Tsukasa Tada, Koji Asakawa, Hiroyuki Fuke, Satoshi Mikoshiba, Yoshiaki Fukuzumi, Hideaki Aochi
  • Publication number: 20110228663
    Abstract: A holographic recording method includes the following steps: irradiating an optical recording medium with a coherent reference beam and a coherent information beam to produce a hologram in the optical recording medium while irradiating the optical recording medium with an incoherent pretreatment beam to consume a polymerization inhibitor; irradiating the hologram with the reference beam to extract a reproduction beam while stopping irradiating the optical recording medium with the reference beam; sensing the signal beam with an image pick-up unit to detect an intensity of the signal beam; and calculating a bit error rate with a control unit to irradiate the hologram with the information beam if the bit error rate is larger than a prescribed value, or to stop irradiating the optical recording medium with the reference beam, the information beam and the pretreatment beam if the bit error rate is smaller than the prescribed value.
    Type: Application
    Filed: September 13, 2010
    Publication date: September 22, 2011
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masaya Terai, Kazuki Matsumoto, Rumiko Hayase, Yoshiaki Kawamonzen, Norikatsu Sasao, Masahiro Kanamaru
  • Publication number: 20100246371
    Abstract: According to a first aspect of the invention, an optical information recording apparatus includes a spatial beam modulator, an optical component, a drive unit, and a control unit. The apparatus performs angle-multiplex recording of the information so that an absolute value of a bisector angle ?x for n-th recording (1?n?rN) is smaller than an absolute value of a bisector angle ?x for m-th recording (m>n and rN<m?N). Here, N is the number of pages to be defined as the total number of recording times performed on a recording spot of an optical information recording medium. The n-th recording is performed on the recording spot with the reference beam and the information beam. r is a rate to be determined by a volumetric shrinkage of the optical information recording medium. The volumetric shrinkage increases with irradiating the optical information recording medium with the reference beam and the information beam.
    Type: Application
    Filed: March 8, 2010
    Publication date: September 30, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masahiro Kanamaru, Kazuki Matsumoto, Rumiko Hayase, Yoshiaki Kawamonzen, Norikatsu Sasao, Masaya Terai
  • Publication number: 20100221646
    Abstract: A holographic recording medium includes a recording layer. The recording layer includes a framework being expressed with the following general formula (1), In the above formula (1), Ar represents a substituted or unsubstituted group selected from benzothiophene group, naphthothiophene group, dibenzothiophene group, thienothiophene group, dithienobenzene group, benzothiazole group, naphthothiazole group, benzoisothiazole group, naphthoisothiazole group, phenothiazine group, phenoxathiin group, dithianaphthalene group, thianthrene group, thioxanthene group, and bithiophene group. In addition, n is an integer from 1 to 4.
    Type: Application
    Filed: January 29, 2010
    Publication date: September 2, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yoshiaki KAWAMONZEN, Kazuki Matsumoto, Rumiko Hayase, Norikatsu Sasao, Masahiro Kanamaru, Masaya Terai
  • Publication number: 20100074074
    Abstract: An optical information recording apparatus includes a first optical system that radiates an information beam that carries information onto a recording medium; a second optical system that radiates reference beams onto the recording medium; a radiation position specifying unit that specifies a plurality of recording spots positioned within a radiation range of the reference beams; and an incident angle obtaining unit that specifies an incident angle of the reference beams that is used for recording an i'th interference fringe into a second recording spot adjacent to a first recording spot, as a value obtained by adding a product of 1/(1+m) and an absolute value of a difference between an incident angle of a first reference beam used for recording an i'th interference fringe into the first recording spot and an incident angle of a second reference beam used for recording an (i+1)'th interference fringe into the first recording spot.
    Type: Application
    Filed: August 26, 2009
    Publication date: March 25, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masahiro Kanamaru, Kazuki Matsumoto, Rumiko Hayase, Satoshi Mikoshiba, Norikatsu Sasao, Takahiro Kamikawa, Masaya Terai
  • Publication number: 20100020372
    Abstract: A holographic recording medium is provided. The medium includes a recording layer. The recording layer includes a polymer matrix, a polymerizable monomer and a photopolymerization initiator. The polymerizable monomer includes a monomer being expressed in the following general formula (M1), (M2), or (M3). In the above general formulas, “A” and “B” denote a polymerizable substituent group and a nonpolymerizable substituent group, respectively.
    Type: Application
    Filed: July 23, 2009
    Publication date: January 28, 2010
    Inventors: Satoshi MIKOSHIBA, Kazuki MATSUMOTO, Rumiko HAYASE, Norikatsu SASAO, Takahiro KAMIKAWA, Masahiro KANAMARU, Masaya TERAI
  • Publication number: 20090231979
    Abstract: An optical recording medium is provided, which includes a recording layer includes a polymer matrix, a polymerizable compound, a photopolymerization initiator, and a polymerization inhibitor. The polymerization inhibitor is formed of a compound which exhibits a molar absorption coefficient of zero to a light having a first wavelength and generates an acid or a base when exposed to an external stimulus other than the light having the first wavelength, thereby inhibiting the polymerization of the polymerizable compound.
    Type: Application
    Filed: February 11, 2009
    Publication date: September 17, 2009
    Inventors: Rumiko HAYASE, Kazuki Matsumoto, Satoshi Mikoshiba, Norikatsu Sasao, Takahiro Kamikawa, Masahiro Kanamaru, Masaya Terai