Patents by Inventor Yuichiro Nakamura
Yuichiro Nakamura 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).
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Patent number: 8817654Abstract: A radio controller 03 of the present invention includes a threshold value holding unit 11 configured to associate a traffic channel configuration with at least one threshold value and hold these associated traffic channel configuration and threshold value, a threshold value extraction unit 13 configured to extract at least one threshold value associated with a traffic channel configuration of a mobile station and a threshold value determination unit 14 configured to determine whether or not to change the traffic channel configuration of the mobile station by comparing the extracted threshold value with a communication state at a predetermined timing.Type: GrantFiled: January 29, 2010Date of Patent: August 26, 2014Assignee: NTT DoCoMo, Inc.Inventors: Yuichiro Nakamura, Yasuhiro Kawabe, Masafumi Masuda
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Publication number: 20140231250Abstract: Provided is a sputtering target for a magnetic recording film, the sputtering target comprising 5 mol % or more and 60 mol % or less of Pt, 0.1 mol % or more and 40 mol % or less of C, 0.05 mol % or more and 20 mol % or less of titanium oxide, and the remainder being Fe. It is an object of the present invention to provide a high-density sputtering target that can produce a granular magnetic thin film without using any high-cost co-sputtering apparatuses and can also reduce the amount of particles generated during sputtering.Type: ApplicationFiled: December 18, 2012Publication date: August 21, 2014Inventors: Shin-ichi Ogino, Atsushi Sato, Yuichiro Nakamura
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Patent number: 8679268Abstract: A ferromagnetic sputtering target comprising metal having a composition containing 20 mol % or less of Cr, and Co as the remainder; wherein the target structure includes a basis metal (A), and flat phases (B), containing 90 wt % or more of Co, within the basis metal (A), the average grain size of the phases (B) is 10 ?m or more and 150 ?m or less, and the average aspect ratio of the phases (B) is 1:2 to 1:10. Provided is a ferromagnetic sputtering target capable of inhibiting the generation of particles during sputtering, and improving the pass-through flux to achieve a stable electrical discharge with a magnetron sputtering device.Type: GrantFiled: September 30, 2010Date of Patent: March 25, 2014Assignee: JX Nippon Mining & Metals CorporationInventors: Shin-ichi Ogino, Atsushi Sato, Yuichiro Nakamura, Atsutoshi Arakawa
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Patent number: 8663402Abstract: A sputtering target and surface processing method is provided. Intermetallic compounds, oxides, carbides, carbonitrides and other substances without ductility exist in the target surface in a highly ductile matrix phase at a volume ratio of 1 to 50%. The target surface is preliminarily subjected to primary processing of cutting work, and then subsequently subjected to finish processing via polishing. The sputtering target subject to this surface processing has an improved target surface with numerous substances without ductility and prevents or suppresses the generation of nodules and particles upon sputtering.Type: GrantFiled: February 11, 2011Date of Patent: March 4, 2014Assignee: JX Nippon Mining & Metals CorporationInventors: Yuichiro Nakamura, Akira Hisano
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Publication number: 20140001038Abstract: Provided is a nonmagnetic-material-dispersed sputtering target having a metal composition comprising 20 mol % or less of Cr and the balance of Co. The target has a structure including a phase (A) in which a nonmagnetic oxide material is dispersed in the basis metal, and a metal phase (B) containing 40 mol % or more of Co; the area proportion of grains of the nonmagnetic oxide material in the phase (A) is 50% or less; and when a minimum-area rectangle circumscribed to the phase (B) is assumed, the proportion of the circumscribed rectangle having a short side of 2 to 300 ?m is 90% or more of all of the phases (B). The ferromagnetic sputtering target can suppress particle generation during sputtering and can improve leakage magnetic flux to allow stable electrical discharge with a magnetron sputtering apparatus.Type: ApplicationFiled: April 6, 2012Publication date: January 2, 2014Applicant: JX NIPPON MINING & METALS CORPORATIONInventors: Shin-ichi Ogino, Atsushi Sato, Atsutoshi Arakawa, Yuichiro Nakamura
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Publication number: 20130341184Abstract: Provided is a Co—Cr—Pt—B-based alloy sputtering target having no more than 10 cracks of 0.1 to 20 ?m in a B-rich phase in a 100 ?m×100 ?m area (field of view). Additionally provided is a method for producing this Co—Cr—Pt—B-based alloy sputtering target including the steps of hot forging or hot rolling a Co—Cr—Pt—B-based alloy cast ingot, thereafter performing cold rolling or cold forging thereto at an elongation rate of 4% or less, and machining the ingot to prepare a target having no more than 10 cracks of 0.1 to 20 ?m in a B-rich phase in a 100 ?m×100 ?m area (field of view), or, hot forging or hot rolling the ingot, thereafter quenching the ingot to ?196° C. to 100° C., and machining the ingot to prepare a target. The target of the present invention has high magnetic flux density and few microcracks in a B-rich layer, and thus stabilizes discharge and minimizes arcing.Type: ApplicationFiled: May 22, 2012Publication date: December 26, 2013Applicant: JX NIPPON MINING & METALS CORPORATIONInventors: Yuto Morishita, Shin-ichi Ogino, Yuichiro Nakamura
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Publication number: 20130316711Abstract: A UE 300 is connectable to a first radio communication system and a second radio communication system which differs from the first radio communication system and uses multiple frequency bands. The UE 300 receives RRC CONNECTION REJECT which gives an instruction to switch from the first radio communication system to the second radio communication system and an indication on multiple switching target frequencies included in the frequency bands used by the second radio communication system, and, if the multiple switching target frequencies include an unavailable frequency at which the UE 300 is incapable of transmission/reception, searches for only a cell of a switching target frequency among the multiple switching target frequencies exclusive of the unavailable frequency.Type: ApplicationFiled: January 16, 2012Publication date: November 28, 2013Applicant: NTT DOCOMO, INC.Inventors: Yuichiro Nakamura, Kenichiro Aoyagi, Hideyuki Matsutani
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Publication number: 20130306470Abstract: A sputtering target for a magnetic recording film which contains carbon, the sputtering target is characterized in that the ratio (IG/ID) of peak intensities of the G-band to the D-band in Raman scattering spectrometry is 5.0 or less. The sputtering target for a magnetic recording film, which contains carbon powders dispersed therein, makes it possible to produce a magnetic thin film having a granular structure without using an expensive apparatus for co-sputtering; and in particular, the target is an Fe—Pt-based sputtering target. Carbon is a material which is difficult to sinter and has a problem that carbon particles are apt to form agglomerates. There is hence a problem that carbon masses are readily detached during sputtering to generate a large number of particles on the film after sputtering. The high-density sputtering target can solve these problems.Type: ApplicationFiled: March 23, 2012Publication date: November 21, 2013Applicant: JX NIPPON MINING & METALS CORPORATIONInventors: Shin-ichi Ogino, Yuichiro Nakamura
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Publication number: 20130310047Abstract: An RNC 200 includes a cell information acquisition unit 201 configured to acquire cell information of a first cell and a second cell, a threshold determination unit 203 configured to determine, based on the acquired cell information, a cell reselection threshold which causes the mobile station to reselect the second cell in place of the first cell and to camp on the second cell, and a camp on cell instruction unit 205 configured to broadcast, to the mobile station, system information in which the determined cell reselection threshold or a camp on frequency determined based on the cell reselection threshold is set.Type: ApplicationFiled: December 27, 2011Publication date: November 21, 2013Applicant: NTT DOCOMO, INC.Inventors: Kenichiro Aoyagi, Yasuyuki Watanabe, Hideyuki Matsutani, Kiminobu Sugano, Yuichiro Nakamura
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Patent number: 8565751Abstract: A mobile communication method according to the present invention includes a step A of offering a particular service through a second radio data link established between a mobile station and a cell in the second area in a state in which a first radio data link is not established between the mobile station and a cell in the first area and a step B of suspending the offer of the particular service through the second radio data link when the state in which the first radio data link is not established continues for a predetermined time period.Type: GrantFiled: November 7, 2008Date of Patent: October 22, 2013Assignee: NTT DoCoMo, Inc.Inventors: Yuichiro Nakamura, Masafumi Masuda, Takaaki Sato, Takanori Utano
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Publication number: 20130267231Abstract: The UE 300 includes a message reception unit 303 configured to receive a command that RAB 500a, RAB 500b established between the UE 300 and the first radio communication system be relocated at the second radio communication system or a command to replace a configuration of the RAB 500a, 500b when the UE 300 executes a handover from the first radio communication system to the second radio communication system, and a radio access bearer establishment unit 305 configured to release an undesignated radio access bearer not designated in the relocation command or the replacement command received by the message reception unit 303, if the undesignated radio access bearer is established.Type: ApplicationFiled: October 28, 2011Publication date: October 10, 2013Applicant: NTT DOCOMO, INC.Inventors: Kenichiro Aoyagi, Hideyuki Matsutani, Kiminobu Sugano, Yuichiro Nakamura
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Publication number: 20130267235Abstract: To achieve a transition of a mobile station to any one of neighboring cells while suppressing the increase of processing load related to a neighboring cell information table even when a number of base stations are present in the neighborhood of the mobile station. A RNC 210 includes a NRT storage unit 211 configured to store information on the neighboring cells of a mobile station 301 in a NRT based on the transition of the mobile station 301 from a LTE system 10 to a 3G system 20, and a mobile station control unit 213 configured to return the mobile station 301 from the 3G system 20 to the LTE system 10 based on the information on the neighboring cells stored in the NRT. The NRT storage unit 211 stores a timing to erase the information on the neighboring cells of the mobile station 301 from the NRT.Type: ApplicationFiled: October 7, 2011Publication date: October 10, 2013Applicant: NTT DOCOMO, INC.Inventors: Kenichiro Aoyagi, Yukiko Takagi, Yuichiro Nakamura, Takeshi Okamoto
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Publication number: 20130260765Abstract: To provide a communication control system and a mobile station control method, in which as soon as a communication in a radio communication system to which a mobile station performed fallback is terminated, the mobile station is quickly returned to a connection with a base station in a radio communication system before the fallback. A RNC 210 includes an information element acquisition unit configured to acquire an information element used to allow the return to a base station before the fallback from an LTE system 10, and a mobile station control unit configured to execute the control to allow the mobile station 300 to return to the HeNB 110. The mobile station control unit executes the control based on the communication state of the mobile station 300 in the 3G system 20.Type: ApplicationFiled: October 7, 2011Publication date: October 3, 2013Applicant: NTT DOCOMO, INC.Inventors: Kenichiro Aoyagi, Yukiko Takagi, Yuichiro Nakamura, Takeshi Okamoto
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Patent number: 8540603Abstract: In a state in which a vehicle travels while an internal-combustion-engine driving torque (Te) is transmitted to drive wheels, the internal-combustion-engine driving torque (Te) and a clutch torque (Tc) are decreased and an electric-motor driving torque (Tm) is increased based on the satisfaction of a shift-up condition (t1). During the time period from the satisfaction of the shift-up condition to time at which the clutch torque (Tc) becomes zero (t1 to t2), a load torque (Ts) of a power generator rotationally driven by an output shaft of the internal combustion engine is generated. In a hybrid vehicle equipped with an AMT, power consumption with the driving of an electric motor when a shift-up action is carried out using the assist of the electric-motor torque can be reduced.Type: GrantFiled: July 5, 2011Date of Patent: September 24, 2013Assignees: Aisin AI Co., Ltd., Aisin Seiki Kabushiki KaishaInventors: Kazutaka Kobayashi, Yuichiro Nakamura
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Publication number: 20130213802Abstract: A sintered compact sputtering target is provided and contains Co and Cr as metal components and includes oxides dispersed in the structure formed of the metal components. The structure of the sputtering target has a region (A) containing Co oxides dispersed in Co and a region (D) containing Cr oxides in a periphery of the region (A). In addition a method of producing the above referenced sintered compact sputtering target is provided and includes the steps of mixing a powder prepared by pulverizing a sintered compact containing Co oxide dispersed in Co, a Co powder, and a Cr power and pressure-sintering the resulting powder mixture to provide a sputtering target.Type: ApplicationFiled: December 2, 2011Publication date: August 22, 2013Applicant: JX NIPPON MINING & METALS CORPORATIONInventors: Atsushi Sato, Yuichiro Nakamura
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Publication number: 20130206591Abstract: Provided is a sputtering target for a magnetic recording film containing SiO2, wherein the sputtering target for a magnetic recording film contains B (boron) in an amount of 10 to 1000 wtppm. An object of this invention is to obtain a sputtering target for a magnetic recording film capable of inhibiting the formation of cristobalites in the target which cause the generation of particles during sputtering, shortening the burn-in time, and realizing a stable discharge with a magnetron sputtering device.Type: ApplicationFiled: November 9, 2011Publication date: August 15, 2013Applicant: JX NIPPON MINING & METALS CORPORATIONInventors: Hideo Takami, Atsushi Nara, Shin-ichi Ogino, Yuichiro Nakamura
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Publication number: 20130210429Abstract: Even when small cells formed by the Home Node B and the Home eNode B are concentrated, the Automatic Neighbor Relation (ANR) function is effectively performed. A mobile device 300 reports cell information including a setting status of a neighboring cell to an RNC 100 based on broadcasted system information received from the neighboring cell. The mobile device 300 determines a neighboring cell to be reported to the RNC 100 based on report-target cell information including at least a type of a neighboring cell to be reported to the RNC 100, and reports the cell information to the RNC 100 based on the broadcasted system information received from the neighboring cell thus determined.Type: ApplicationFiled: August 10, 2011Publication date: August 15, 2013Applicant: NTT DOCOMO, INC.Inventors: Kenichiro Aoyagi, Yuichiro Nakamura, Kiminobu Sugano
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Publication number: 20130210442Abstract: The communication system according to the present invention includes: a mobile device 300 connectable to an LTE system and a 3G system; and an RNC 210 configured to control mobility of the mobile device 300 between the LTE system and the 3G system. When the mobile device sends the RNC 210 a request for connection to the 3G system instead of the LTE system because the LTE system imposes access restriction to restrict communication performed by the mobile device 300, the mobile device 300 incorporates mobility information in the request for connection, the mobility information indicating that the mobile device hands over from the LTE system. In addition, when acquiring the mobility information from the mobile device 300, the RNC 210 restrains the mobile device 300 from handing over to the LTE system.Type: ApplicationFiled: August 10, 2011Publication date: August 15, 2013Applicant: NTT DOCOMO, INC.Inventors: Kenichiro Aoyagi, Kiminobu Sugano, Yuichiro Nakamura
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Publication number: 20130168240Abstract: An Fe—Pt-based ferromagnetic material sputtering target comprising a metal and a metal oxide, wherein the metal has a composition in which Pt is contained in an amount of 5 mol % or more and 60 mol % or less and the remainder is Fe. An object of the present invention is to provide a ferromagnetic material sputtering target, which enables to form a magnetic recording layer composed of a magnetic phase such as an Fe—Pt alloy, and a non-magnetic phase to isolate the magnetic phase, and in which a metal oxide is used as one of the materials for the non-magnetic phase. Provided is a ferromagnetic material sputtering target wherein an inadvertent release of the metal oxide during sputtering and particle generation due to abnormal electrical discharge starting at a void inherently included in the target are suppressed, the adherence between the metal oxide and the matrix alloy is enhanced, and its density is increased.Type: ApplicationFiled: August 5, 2011Publication date: July 4, 2013Applicant: JX NIPPON MINING & METALS CORPORATIONInventors: Shin-ichi Ogino, Yuichiro Nakamura
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Publication number: 20130150207Abstract: In a state in which a vehicle travels while an internal-combustion-engine driving torque (Te) is transmitted to drive wheels, Te and a clutch torque Tc are decreased and an electric-motor driving torque (Tm) is increased based on the satisfaction of a shift-up condition (t1). Thereafter, based on the fact that Tc becomes zero (t2), a shift-up action is carried out while maintaining Tc to zero and maintaining a state in which Tm is transmitted to the drive wheels (t2 to t3). Then, based on the termination of the shift-up action (t3), Te and Tc are increased and Tm is decreased (t3 to t5). During the time period from the satisfaction of the shift-up condition to time at which Tc becomes zero (t1 to t2), a load torque (Ts) of a power generator rotationally driven by an output shaft of the internal combustion engine is generated.Type: ApplicationFiled: July 5, 2011Publication date: June 13, 2013Applicants: AISIN SEIKI KABUSHIKI KAISHA, AISIN AI CO., LTD.Inventors: Kazutaka Kobayashi, Yuichiro Nakamura