Patents by Inventor Hajime Yuzurihara

Hajime Yuzurihara 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: 9812733
    Abstract: Provided is a sulfide-based solid electrolyte, including: a Na element; a Ge element; a P element; and a S element, wherein an atomic percentage (at. %) of each of the Na element, the Ge element, the P element, and the S element is as follows when a total of the respective elements is 100 at. %, Na: from 38.8 at. % to 48.4 at. % Ge: from 0.5 at. % to 8.9 at. % P: from 3.9 at. % to 7.9 at. % S: from 43.6 at. % to 48.6 at. %.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: November 7, 2017
    Assignees: RICOH COMPANY, LTD., TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Shigeo Takeuchi, Hajime Yuzurihara, Ryoji Kanno
  • Publication number: 20150249263
    Abstract: Provided is a sulfide-based solid electrolyte, including: a Na element; a Ge element; a P element; and a S element, wherein an atomic percentage (at. %) of each of the Na element, the Ge element, the P element, and the S element is as follows when a total of the respective elements is 100 at. %, Na: from 38.8 at. % to 48.4 at. % Ge: from 0.5 at. % to 8.9 at. % P: from 3.9 at. % to 7.9 at. % S: from 43.6 at. % to 48.6 at. %.
    Type: Application
    Filed: February 3, 2015
    Publication date: September 3, 2015
    Applicants: RICOH COMPANY, LTD., Tokyo Institute of Techonology
    Inventors: Shigeo TAKEUCHI, Hajime YUZURIHARA, Ryoji KANNO
  • Publication number: 20150177711
    Abstract: An electric device control system includes: a position locating apparatus detecting positions and motion states of people; and a control apparatus controlling electric device, the position locating apparatus comprising: a first receiving unit receiving data from the people; a position determining unit obtaining information of the people; a motion-state detecting unit obtaining motion state information of the people; and a transmitting unit transmitting the position information and the motion state information of the people to the control apparatus, and the control apparatus comprising: a second receiving unit receiving the position information and the motion state information, a determining unit assigning priority to the people based on the position information and the motion state information, and a device control unit controlling a device associated with the people in accordance with the priority such that the device associated with the people becomes a predetermined status of the people.
    Type: Application
    Filed: July 19, 2013
    Publication date: June 25, 2015
    Inventors: Hajime Yuzurihara, Takanori Inadome, Takeo Tsukamoto, Hideaki Aratani
  • Publication number: 20140309963
    Abstract: A positioning apparatus for measuring a position of a mobile object in a target area, the positioning apparatus includes: an estimation unit configured to estimate a first position, the first position being a relative to a reference position of the mobile object; an acquisition unit configured to acquire power information of an electrical appliance provided in the target area; and a correction unit configured to correct the first position for a second position on the basis of the power information of the electrical appliance and positional information indicating the second position of the electrical appliance.
    Type: Application
    Filed: August 6, 2013
    Publication date: October 16, 2014
    Inventors: Takeo Tsukamoto, Hajime Yuzurihara, Takanori Inadome, Hideaki Aratani
  • Publication number: 20140309752
    Abstract: A device control system includes a positioning apparatus and a control apparatus connected to the positioning apparatus through a network. The positioning apparatus includes a receiver configured to receive detection data from an acceleration sensor, an angular velocity sensor, and a geomagnetic sensor that are carried by a person; a position identifying unit configured to identify a position of the person in a control target area based on the detection data; an action-state detecting unit configured to detect an action state of the person based on the detection data; and a transmitter configured to transmit the identified position and the detected action state to the control apparatus. The control apparatus includes a device control unit configured to control a device arranged in the control target area based on the position and the action state of the person.
    Type: Application
    Filed: November 9, 2012
    Publication date: October 16, 2014
    Inventors: Hajime Yuzurihara, Takeo Tsukamoto, Takanori Inadome, Hideaki Aratani
  • Patent number: 8075974
    Abstract: An optical recording medium having first protective layer, recording layer, second protective layer, and reflective layer, wherein the recording layer contains a phase-change material represented by Formula (1?1), Formula (1-2), or Formula (1-3); the second protective layer contains one selected from zinc oxides, indium oxides, tin oxides, mixtures thereof, and materials Formula (2), and materials Formula (3). Formula (1?1): In?iSb?iX1?i(X1: Ge, Te, Zn, Mn, or mixture thereof, 0.10??1?0.25, 0.65??1?0.80, and 0.04??1?0.15) Formula (1-2): Ga?2Sb?2SnY2Ges2X2?2 (X2: Te, Zn, Mn, In, or mixture thereof, 0.04??2?0.09, 0.56?62?0.79, 0.05??2<0.30, 0.03??2?0.19, and 0??2?0.09) Formula (1-3): Mn?3Sb?3SnY3Ge?3X3?3 (X3: Te, In, Zn, Bi, or mixture thereof, 0.04??3?0.09, 0.56?63?0.79, 0.05??3?0.29, 0.03??3?0.23, and 0??3?0.09) Formula (2): ZnO—Al—Y [(100??4?64):?4:?4] (Y: Mn, Ge, Ti, or mixture thereof, 0.5??4?10.0, and 0?B4?25.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: December 13, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroshi Deguchi, Eiko Hibino, Hiroko Ohkura, Kazunori Ito, Hajime Yuzurihara, Hiroyuki Iwasa
  • Publication number: 20110226337
    Abstract: To provide a thin-film solar battery including a substrate, a first electrode, a photoelectric conversion layer and a second electrode, the first electrode, the photoelectric conversion layer and the second electrode being placed over the substrate, wherein the photoelectric conversion layer has a laminated layer structure which includes at least a p-type layer and an n-type layer, and wherein the n-type layer is formed of a compound containing elements of Group 13, Group 16 and at least one of Groups 2, 7 and 12, the Group 13 includes at least indium, and the Group 16 includes at least sulfur.
    Type: Application
    Filed: March 16, 2011
    Publication date: September 22, 2011
    Inventors: Hiroshi Deguchi, Hiroshi Miura, Kazuaki Tsuji, Hajime Yuzurihara
  • Patent number: 7611762
    Abstract: An optical disc having a transition linear velocity of 8-11 m/s when irradiating continuous light with 11±1 mW and a wavelength of 660±10 nm using a pickup head with a numerical aperture (NA) of 0.65, and satisfying the following condition: ?R=|Rb?Ra|?3% where Rb is a reflectance of an unrecorded area, and Ra is a reflectance of the top of an eye pattern after ten cycles of recording. In one recording mode therefor, the disc is rotated at a constant angular velocity so as to have a linear velocity of 3-4 m/s on an innermost track and a linear velocity of 8-9 m/s on an outermost track. In another mode, the disc is rotated at a constant angular velocity so as to have a linear velocity of 5-6 m/s on an innermost track and a linear velocity of 13-14 m/s on an outermost track.
    Type: Grant
    Filed: April 5, 2006
    Date of Patent: November 3, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroshi Deguchi, Hajime Yuzurihara, Eiko Hibino, Hiroshi Miura, Mikiko Abe, Shinya Narumi, Takeshi Kibe, Katsuyuki Yamada, Satoshi Taniguchi
  • Patent number: 7570563
    Abstract: The object is to provide an optical recording method improving the recording characteristics and uniformity in a CAV recording on a phase-change optical recording medium, particularly a high-speed rewritable DVD medium, and a phase-change optical recording medium and an optical recording apparatus used by the method.
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: August 4, 2009
    Assignee: Ricoh Company, Ltd
    Inventors: Hajime Yuzurihara, Hiroshi Deguchi, Katsuyuki Yamada, Shinya Narumi, Mikiko Abe, Eiko Hibino, Hiroshi Miura
  • Patent number: 7507523
    Abstract: An optical information recording medium is provided. This medium at least stores information that indicates a maximum recording linear velocity Vh. The medium comprises a substrate having a concentric circular guide groove. This guide grove has land portions and groves portions. At least a phase change type recording layer is formed on the substrate. The recording layer has such a composition and thickness that a dislocation linear velocity V satisfies the relation V?Vh×0.85.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: March 24, 2009
    Assignee: Ricoh Company, Ltd
    Inventors: Katsuyuki Yamada, Shinya Narumi, Makoto Harigaya, Katsuhiko Tani, Noriyuki Iwata, Nobuaki Onagi, Kazunori Ito, Takashi Shibaguchi, Eiko Hibino, Hajime Yuzurihara, Hiroko Ohkura, Akira Shimofuku, Yuki Nakamura
  • Publication number: 20090046565
    Abstract: To provide a method for determining an optimum laser beam power for a single-side, dual-layer optical recording medium having first and second information layers, the method including: determining an optimum laser beam power based on a predetermined characteristic value at the time when the number of overwrite cycles on the recording medium is a predetermined value, wherein the method is conducted by an optical recording/reproduction apparatus utilizing optical change, and wherein the first information layer is closer to the laser irradiation side than is the second information layer.
    Type: Application
    Filed: February 15, 2007
    Publication date: February 19, 2009
    Inventors: Hajime Yuzurihara, Hiroyuki Iwasa, Hiroshi Deguchi
  • Publication number: 20090029091
    Abstract: An optical recording medium having first protective layer, recording layer, second protective layer, and reflective layer, wherein the recording layer contains a phase-change material represented by Formula (1?1), Formula (1-2), or Formula (1-3); the second protective layer contains one selected from zinc oxides, indium oxides, tin oxides, mixtures thereof, and materials Formula (2), and materials Formula (3). Formula (1?1): In?iSb?iX1?i(X1: Ge, Te, Zn, Mn, or mixture thereof, 0.10??1?0.25, 0.65??1?0.80, and 0.04??1?0.15) Formula (1-2): Ga?2Sb?2SnY2Ges2X2?2 (X2: Te, Zn, Mn, In, or mixture thereof, 0.04??2?0.09, 0.56?62?0.79, 0.05??2<0.30, 0.03??2?0.19, and 0??2?0.09) Formula (1-3): Mn?3Sb?3SnY3Ge?3X3?3 (X3: Te, In, Zn, Bi, or mixture thereof, 0.04??3?0.09, 0.56?63?0.79, 0.05??3?0.29, 0.03??3?0.23, and 0??3?0.09) Formula (2): ZnO—Al—Y [(100??4?64):?4:?4] (Y: Mn, Ge, Ti, or mixture thereof, 0.5??4?10.0, and 0?B4?25.
    Type: Application
    Filed: March 2, 2007
    Publication date: January 29, 2009
    Inventors: Hiroshi Deguchi, Eiko Hibino, Hiroko Ohkura, Kazunori Ito, Hajime Yuzurihara, Hiroyuki Iwasa
  • Patent number: 7417930
    Abstract: An optical recording method of recording information to a phase change optical recording medium with alternate application of peak power and bias power in a pulse manner and with changing a pulse application. interval continuously from an inner part through an outer part of the recording medium with an interval proportional to a window width Tw and a fixed interval, comprising the step of starting a top peak power application interval with a delay from a data input pulse signal starting time for a target mark length nTw, where n denotes an integer in a range between 3 and 14, with changing the delay in proportion to the window width Tw with changing a proportionality factor discretely with respect each linear velocity.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: August 26, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Hajime Yuzurihara, Mikiko Abe, Hiroshi Deguchi, Eiko Hibino, Hiroshi Miura, Kazunori Ito, Michiharu Abe
  • Patent number: 7414954
    Abstract: A phase-change optical information recording medium in which information can be recorded, reproduced and rewritten and which includes a first transparent substrate having a wobbling guide groove which is spirally formed thereon at a pitch; a first dielectric layer located overlying the first transparent substrate and having an optical thickness of from 80 nm to 200 nm; a phase-change recording layer located overlying the first dielectric layer and having an optical thickness of from 20 to 50 nm when the recording layer is in an erased state; a second dielectric layer located overlying the recording layer and having an optical thickness of from 10 nm to 70 nm; a reflection layer located overlying the second dielectric layer; optionally a third dielectric layer located between the second dielectric layer and the reflection layer; and a second transparent substrate located overlying the reflection layer.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: August 19, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Kazunori Ito, Hajime Yuzurihara, Nobuaki Onagi, Katsuyuki Yamada, Shinya Narumi
  • Patent number: 7411887
    Abstract: A phase-change optical information recording medium in which information can be recorded, reproduced and rewritten and which includes a first transparent substrate having a wobbling guide groove which is spirally formed thereon at a pitch; a first dielectric layer located overlying the first transparent substrate and having an optical thickness of from 80 nm to 200 nm; a phase-change recording layer located overlying the first dielectric layer and having an optical thickness of from 20 to 50 nm when the recording layer is in an erased state; a second dielectric layer located overlying the recording layer and having an optical thickness of from 10 nm to 70 nm; a reflection layer located overlying the second dielectric layer; optionally a third dielectric layer located between the second dielectric layer and the reflection layer; and a second transparent substrate located overlying the reflection layer.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: August 12, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Kazunori Ito, Hajime Yuzurihara, Nobuaki Onagi, Katsuyuki Yamada, Shinya Narumi
  • Publication number: 20080145587
    Abstract: It is an object of the present invention to provide an optical recording medium containing a substrate, and a reflective layer, a second dielectric layer, a recording layer and a first dielectric layer which are disposed over the substrate in this order, wherein the recording layer contains a phase-change recording material containing any one of GeSbSnMn and GeSbSnMnGa, and the second dielectric layer contains an oxide of two or more elements of Nb, Si and Ta.
    Type: Application
    Filed: February 11, 2008
    Publication date: June 19, 2008
    Applicant: Ricoh Company, Ltd,
    Inventors: Hajime YUZURIHARA, Hiroyuki Iwasa, Katsunari Hanaoka, Kiyoto Shibata, Yujiro Kaneko
  • Patent number: 7364781
    Abstract: An optical recording medium including a recording layer which includes a reversible phase-change recording material, the recording layer being capable of writing information therein, reading written information therefrom, and rewriting written information by utilizing the reversible phase change of the phase-change recording material, wherein when a recording mark formed in the recording layer is repeatedly read 5000 times, using a continuous wave laser beam having such an intensity Pr that satisfies the condition of 1.1?R?2.0, in which R is ?repeat/?1 as defined in the specification, the optical recording medium satisfies a relationship of d1>dow as defined in the specification. The phase-change recording material, a method of producing the optical recording medium, and a method of writing information in the optical recording medium, reading written information therefrom and rewriting written information therein are proposed.
    Type: Grant
    Filed: April 24, 2006
    Date of Patent: April 29, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Kazunori Ito, Eiko Hibino, Makoto Harigaya, Takashi Shibaguchi, Hajime Yuzurihara, Nobuaki Onagi, Hiroko Ohkura, Katsuhiko Tani, Noriyuki Iwata
  • Patent number: 7362683
    Abstract: An optical recording method of recording information to a phase change optical recording medium with alternate application of peak power and bias power in a pulse manner and with changing a pulse application interval continuously from an inner part through an outer part of the recording medium with an interval proportional to a window width Tw and a fixed interval, comprising the step of starting a top peak power application interval with a delay from a data input pulse signal starting time for a target mark length nTw, where n denotes an integer in a range between 3 and 14, with changing the delay in proportion to the window width Tw with changing a proportionality factor discretely with respect each linear velocity.
    Type: Grant
    Filed: December 10, 2003
    Date of Patent: April 22, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Hajime Yuzurihara, Mikiko Abe, Hiroshi Deguchi, Eiko Hibino, Hiroshi Miura, Kazunori Ito, Michiharu Abe
  • Patent number: 7349315
    Abstract: An information recording method including irradiating an optical information recording medium containing a phase change recording layer on a substrate having a guide groove with continuous light of a laser beam having an erase power level Pe to determine a transition linear velocity Vo defined as a minimum linear velocity above which the following relationship is satisfied: Rr=Ra/Rb<1, wherein Rr represents a reflection light intensity ratio, and Ra and Rb represent a reflection light intensity measured after and before the irradiation of the optical information recording medium with the continuous light, respectively, prior to recording information in the optical information recording medium.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: March 25, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinya Narumi, Katsuyuki Yamada, Masaki Kato, Hajime Yuzurihara, Hiroshi Deguchi
  • Publication number: 20080037406
    Abstract: An optical recording medium which comprises a phase-change recording layer utilizing optical constants associated with a reversible-phase-change induced by laser beam irradiation between an amorphous phase and a crystalline phase. The phase-change recording layer comprises Ge, Sb, Sn, Mn, and X. X represents at least one element selected from In, Bi, Te, Ag, Al, Zn, Co, Ni, and Cu. When the relation of respective contents thereof is represented by Ge?Sb?Sn?Mn?X?, elements of ?, ?, ?, ?, and ? respectively satisfy the following numerical expressions: 5???25, 45???75, 10???30, 0.5???20, and 0???15 (atomic %) when ?+?+?+?+?=100), and the total content of of Ge, Sb, Sn, Mn, and X is 95 atomic % of the entire content of the phase-change recording layer.
    Type: Application
    Filed: July 14, 2005
    Publication date: February 14, 2008
    Applicant: RICOH COMPANY, LTD.
    Inventors: Hajime Yuzurihara, Katsunari Hanaoka, Kiyoto Shibata, Yujiro Kaneko, Hiroyuki Iwasa