Patents by Inventor Yoshihide Tsunobuchi

Yoshihide Tsunobuchi 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: 9079782
    Abstract: A titanium oxide particle that can develop non-conventional and novel physical properties, a method for manufacturing the same, and a magnetic memory, an optical information recording medium, and a charge accumulation type memory using the same are provided. A silica-coated titanium hydroxide compound particle is directly produced through a sol-gel technique and not through a reverse micelle technique, and the silica-coated titanium hydroxide compound particle is subjected to a calcination process. Hence, a titanium oxide particle 1 can be provided which can develop non-conventional and novel physical properties such that it does not perform phase transition at a room temperature and a Ti3O5 particle body can always maintain the characteristic as a paramagnetic metal in all temperature ranges unlike conventional bulk bodies that perform phase transition between a non-magnetic semiconductor and a paramagnetic metal at a temperature near about 460 K.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: July 14, 2015
    Assignee: The University of Tokyo
    Inventors: Shin-ichi Ohkoshi, Hiroko Tokoro, Fumiyoshi Hakoe, Yoshihide Tsunobuchi, Kazuhito Hashimoto
  • Patent number: 9005569
    Abstract: A microstructure that can develop non-conventional and novel physical properties and a method for producing the same are provided. Ethanol is added to a mixture solution produced by adding a surfactant solution to a peroxotitanic acid aqueous solution to produce precipitates, and the precipitates collected from the mixture solution are let dried to produce precursor powders 5. The precursor powders 5 are calcined at a predetermined temperature. Accordingly, a microstructure 2 can be produced which is formed of monophasic Ti4O7 in nano size. The microstructure 2 of monophasic Ti4O7 produced in this fashion can be fine-grained in nano size unlike prior-art crystals.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: April 14, 2015
    Assignee: The University of Tokyo
    Inventors: Shin-ichi Ohkoshi, Deepa Dey, Yoshihide Tsunobuchi, Kazuhito Hashimoto, Hiroko Tokoro, Fumiyoshi Hakoe
  • Patent number: 8609261
    Abstract: There are provided titanium oxide particles capable of manifesting an unprecedented property, a manufacturing method thereof and a magnetic memory as well as a charge storage type memory employing the titanium oxide particles. Unlike-conventional bulk bodies phase-transited between nonmagnetic semiconductors and paramagnetic metals around about 460K, provided are titanium oxide particles 3 capable of manifesting an unprecedented property that Ti3O5 particles do not undergo phase transitions at room temperature and allow a paramagnetic metal property thereof to be consistently maintained in any temperature range.
    Type: Grant
    Filed: November 26, 2009
    Date of Patent: December 17, 2013
    Assignee: The University of Tokyo
    Inventors: Shin-ichi Ohkoshi, Tomoyuki Matsuda, Yoshihide Tsunobuchi, Kazuhito Hashimoto, Hiroko Tokoro
  • Patent number: 8535816
    Abstract: There are provided a fine structural body capable of manifesting an unprecedented property; a manufacturing method thereof; and a magnetic memory, a charge storage memory and an optical information recording medium employing such fine structural body. Unlike conventional bulk bodies phase-transited between nonmagnetic semiconductors and paramagnetic metals around about 460K, there can be provided a fine structural body 1 comprised of Ti3O5, but capable of manifesting an unprecedented property in which a paramagnetic metal property thereof is consistently maintained in all temperature ranges without undergoing phase transition to a nonmagnetic semiconductor.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: September 17, 2013
    Assignee: The University of Tokyo
    Inventors: Shin-ichi Ohkoshi, Yoshihide Tsunobuchi, Hiroko Tokoro, Fumiyoshi Hakoe, Kazuhito Hashimoto
  • Publication number: 20130105723
    Abstract: A titanium oxide particle that can develop non-conventional and novel physical properties, a method for manufacturing the same, and a magnetic memory, an optical information recording medium, and a charge accumulation type memory using the same are provided. A silica-coated titanium hydroxide compound particle is directly produced through a sol-gel technique and not through a reverse micelle technique, and the silica-coated titanium hydroxide compound particle is subjected to a calcination process. Hence, a titanium oxide particle 1 can be provided which can develop non-conventional and novel physical properties such that it does not perform phase transition at a room temperature and a Ti3O5 particle body can always maintain the characteristic as a paramagnetic metal in all temperature ranges unlike conventional bulk bodies that perform phase transition between a non-magnetic semiconductor and a paramagnetic metal at a temperature near about 460 K.
    Type: Application
    Filed: April 15, 2011
    Publication date: May 2, 2013
    Applicant: THE UNIVERSITY OF TOKYO
    Inventors: Shin-ichi Ohkoshi, Hiroko Tokoro, Fumiyoshi Hakoe, Yoshihide Tsunobuchi, Kazuhito Hashimoto
  • Publication number: 20120275990
    Abstract: A microstructure that can develop non-conventional and novel physical properties and a method for producing the same are provided. Ethanol is added to a mixture solution produced by adding a surfactant solution to a peroxotitanic acid aqueous solution to produce precipitates, and the precipitates collected from the mixture solution are let dried to produce precursor powders 5. The precursor powders 5 are calcined at a predetermined temperature. Accordingly, a microstructure 2 can be produced which is formed of monophasic Ti4O7 in nano size. The microstructure 2 of monophasic Ti4O7 produced in this fashion can be fine-grained in nano size unlike prior-art crystals.
    Type: Application
    Filed: November 19, 2010
    Publication date: November 1, 2012
    Applicant: The University of Tokyo
    Inventors: Shin-ichi Ohkoshi, Deepa Dey, Yoshihide Tsunobuchi, Kazuhito Hashimoto, Hiroko Tokoro, Fumiyoshi Hakoe
  • Publication number: 20110287282
    Abstract: There are provided a fine structural body capable of manifesting an unprecedented property; a manufacturing method thereof; and a magnetic memory, a charge storage memory and an optical information recording medium employing such fine structural body. Unlike conventional bulk bodies phase-transited between nonmagnetic semiconductors and paramagnetic metals around about 460K, there can be provided a fine structural body 1 comprised of Ti3O5, but capable of manifesting an unprecedented property in which a paramagnetic metal property thereof is consistently maintained in all temperature ranges without undergoing phase transition to a nonmagnetic semiconductor.
    Type: Application
    Filed: July 13, 2009
    Publication date: November 24, 2011
    Inventors: Shin-ichi Ohkoshi, Yoshihide Tsunobuchi, Hiroko Tokoro, Fumiyoshi Hakoe, Kazuhito Hashimoto
  • Publication number: 20110204278
    Abstract: There are provided titanium oxide particles capable of manifesting an unprecedented property, a manufacturing method thereof and a magnetic memory as well as a charge storage type memory employing the titanium oxide particles. Unlike-conventional bulk bodies phase-transited between nonmagnetic semiconductors and paramagnetic metals around about 460K, provided are titanium oxide particles 3 capable of manifesting an unprecedented property that Ti3O5 particles do not undergo phase transitions at room temperature and allow a paramagnetic metal property thereof to be consistently maintained in any temperature range.
    Type: Application
    Filed: November 26, 2009
    Publication date: August 25, 2011
    Applicant: THE UNIVERSITY OF TOKYO
    Inventors: Shin-ichi Ohkoshi, Tomoyuki Matsuda, Yoshihide Tsunobuchi, Kazuhito Hashimoto, Hiroko Tokoro