Patents by Inventor Tsuyoshi Aoki
Tsuyoshi Aoki 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: 8876412Abstract: An optical connector includes a fiber holder to hold optical fibers; a housing to accommodate the optical fibers and the fiber holder; and a thermally driven actuator to displace at least a part of the fiber holder upon application of heat from a first position at which the fiber holder is retracted inside the housing to a second position that allows the optical fibers to be optically coupled to a counterpart connector.Type: GrantFiled: July 30, 2012Date of Patent: November 4, 2014Assignee: Fujitsu LimitedInventors: Tsuyoshi Aoki, Shigenori Aoki, Hidenobu Muranaka
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Publication number: 20140079354Abstract: A method for producing an optical connector includes making only the core jut spherically from an end facet of an optical fiber by arc discharge, the optical fiber having a difference in index of refraction between a core and a clad at 1% to 3% by adding dopant that increases an index of refraction of the core and lowers a melting point of the core, and mounting the optical fiber processed by the arc discharge in a ferrule.Type: ApplicationFiled: July 25, 2013Publication date: March 20, 2014Applicant: FUJITSU LIMITEDInventors: Tsuyoshi Aoki, Shigenori Aoki, Hidenobu Muranaka
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Patent number: 8421312Abstract: An acceleration sensor includes a piezoelectric layer formed on a substrate, and sensing electrodes formed in the piezoelectric layer. In the acceleration sensor, the piezoelectric layer interposing between the sensing electrodes is polarized in a film thickness direction of the piezoelectric layer.Type: GrantFiled: December 16, 2011Date of Patent: April 16, 2013Assignee: Fujitsu LimitedInventors: Tsuyoshi Aoki, Kazuaki Kurihara, Shigeyoshi Umemiya
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Publication number: 20130084045Abstract: An optical connector includes a fiber holder to hold optical fibers; a housing to accommodate the optical fibers and the fiber holder; and a thermally driven actuator to displace at least a part of the fiber holder upon application of heat from a first position at which the fiber holder is retracted inside the housing to a second position that allows the optical fibers to be optically coupled to a counterpart connector.Type: ApplicationFiled: July 30, 2012Publication date: April 4, 2013Applicant: FUJITSU LIMITEDInventors: Tsuyoshi AOKI, Shigenori Aoki, Hidenobu Muranaka
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Publication number: 20130071063Abstract: An optical connector includes: a holding member that holds an optical transmission line; a lens member that has a lens; a concavo-convex structure provided between the holding member and the lens member; and a moving member that moves the concavo-convex structure between a first state where a protrusion and a recess of the concavo-convex structure are engaged with each other and a second state where a gap is formed between the protrusion and the recess.Type: ApplicationFiled: June 27, 2012Publication date: March 21, 2013Applicant: FUJITSU LIMITEDInventors: Tsuyoshi AOKI, Shigenori Aoki, Hidenobu Muranaka
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Patent number: 8376063Abstract: A structure for attaching a rear work machine to a tractor is provided. The tractor has a vehicle body which is provided with right and left rear work machine connection bodies, each having upper and lower connection portions. The rear work machine includes a base frame with an operator's seat, which is provided with right and left attaching plates, each having upper and lower engagement portions. The rear work machine can be attached to the tractor by connecting the upper and lower engagement portions to the upper and lower connection portions, respectively. The attaching structure includes: a rear work machine attaching spacer disposed between the rear work machine connection body and the corresponding attaching plate, the rear work machine attaching spacer including: a fixing portion for fixing to the attaching plate; and the upper and lower spacer engagement portions for removably connecting the upper and lower connection portions, respectively.Type: GrantFiled: March 16, 2010Date of Patent: February 19, 2013Assignee: Kubota CorporationInventors: Eiji Miyazaki, Tsuyoshi Aoki
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Patent number: 8304490Abstract: It is an object of the present invention to provide polylactic acid containing a stereocomplex crystal and having excellent moldability, a high molecular weight, high crystallinity and a high melting point and a process for manufacturing the same. It is another object of the present invention to provide a composition comprising the polylactic acid and a molded product of the polylactic acid. The present invention is characterized from polylactic acid having a weight average molecular weight of 80,000 to 500,000 and a melting peak at 195° C. or higher which accounts for 80% or more of the total of melting peaks in the temperature elevation step when measured by a differential scanning calorimeter (DSC) and a process for manufacturing the same.Type: GrantFiled: July 20, 2005Date of Patent: November 6, 2012Assignees: Teijin Limited, Musashino Chemical Laboratory, Ltd, Mutual CorporationInventors: Yoshiharu Kimura, Zhen Tang, Kazuki Fukushima, Kiyotsuna Toyohara, Ryuji Nonokawa, Yasuhito Maeda, Masayuki Takada, Yuka Komazawa, Tsuyoshi Aoki
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Publication number: 20120237168Abstract: An optical connector includes a fiber holder with guide holes for guiding optical fibers, a space communicating with the guide holes and to accommodate the optical fibers, and a deformable member that forms at least a part of the fiber holder and causes the space to deform or displace to allow a part or all of the optical fibers to bend in the space.Type: ApplicationFiled: January 27, 2012Publication date: September 20, 2012Applicants: FURUKAWA ELECTRIC CO., LTD., FUJITSU LIMITEDInventors: Tsuyoshi AOKI, Shigenori AOKI, Hidenobu MURANAKA, Mitsuhiro IWAYA, Tsunetoshi SAITO, Katsuki SUEMATSU
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Patent number: 8207653Abstract: A piezoelectric generating apparatus includes a plurality of piezoelectric bodies arranged at intervals via a gap. Each of the plurality of piezoelectric bodies includes a fixed end and a free end. A first surface electrode is formed on one side of each of the plurality of piezoelectric bodies, and a second surface electrode is formed on an opposite side of each of the plurality of piezoelectric bodies. A weight spans the plurality of piezoelectric bodies and attached to the free ends of the plurality of piezoelectric bodies. The plurality of piezoelectric bodies are curved upon application of acceleration to the weight from the outside in a lateral direction.Type: GrantFiled: September 13, 2011Date of Patent: June 26, 2012Assignee: Fujitsu LimitedInventors: Kazuaki Kurihara, Shigeyoshi Umemiya, Tsuyoshi Aoki
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Publication number: 20120101248Abstract: PROBLEM There is provided a method for producing polylactic acid, which is capable of obtaining polylactic acid at low cost, and having high molecular weight. SOLUTION A method for producing polylactic acid by polymerizing molten lactide using at least one reactor having plug flow characteristics with ?(?), calculated from the following FORMULA (1), of 0.3 or smaller: ?(?)=?0?(E(?)×ABS(1??))d???(1) in the Formula (1), E(?) is a residence time distribution function determined by impulse response by starch syrup having a viscosity of 3 Pa·s, and ? is ratio of elapsed time ? and mean residence time ?0.Type: ApplicationFiled: June 14, 2010Publication date: April 26, 2012Inventors: Kenichiro Matsuba, Tsuyoshi Aoki
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Publication number: 20120086311Abstract: An acceleration sensor includes a piezoelectric layer formed on a substrate, and sensing electrodes formed in the piezoelectric layer. In the acceleration sensor, the piezoelectric layer interposing between the sensing electrodes is polarized in a film thickness direction of the piezoelectric layer.Type: ApplicationFiled: December 16, 2011Publication date: April 12, 2012Applicant: FUJITSU LIMITEDInventors: Tsuyoshi Aoki, Kazuaki Kurihara, Shigeyoshi Umemiya
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Publication number: 20120007470Abstract: A piezoelectric generating apparatus includes a plurality of piezoelectric bodies arranged at intervals via a gap. Each of the plurality of piezoelectric bodies includes a fixed end and a free end. A first surface electrode is formed on one side of each of the plurality of piezoelectric bodies, and a second surface electrode is formed on an opposite side of each of the plurality of piezoelectric bodies. A weight spans the plurality of piezoelectric bodies and attached to the free ends of the plurality of piezoelectric bodies. The plurality of piezoelectric bodies are curved upon application of acceleration to the weight from the outside in a lateral direction.Type: ApplicationFiled: September 13, 2011Publication date: January 12, 2012Applicant: FUJITSU LIMITEDInventors: Kazuaki KURIHARA, Shigeyoshi Umemiya, Tsuyoshi Aoki
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Publication number: 20100300778Abstract: A structure for attaching a rear work machine to a tractor is provided. The tractor has a vehicle body which is provided with right and left rear work machine connection bodies, each having upper and lower connection portions. The rear work machine includes a base frame with an operator's seat, which is provided with right and left attaching plates, each having upper and lower engagement portions. The rear work machine can be attached to the tractor by connecting the upper and lower engagement portions to the upper and lower connection portions, respectively. The attaching structure includes: a rear work machine attaching spacer disposed between the rear work machine connection body and the corresponding attaching plate, the rear work machine attaching spacer including: a fixing portion for fixing to the attaching plate; and the upper and lower spacer engagement portions for removably connecting the upper and lower connection portions, respectively.Type: ApplicationFiled: March 16, 2010Publication date: December 2, 2010Applicant: KUBOTA CORPORATIONInventors: Eiji Miyazaki, Tsuyoshi Aoki
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Publication number: 20100244635Abstract: According to one embodiment, a piezoelectric element is provided by forming a first electrode film on a major surface of a substrate, forming a modified film by modifying at least a portion of the major surface of the substrate by heating the substrate in an ambient containing oxygen, and forming a piezoelectric film by depositing a piezoelectric material on the first electrode film, forming a second electrode film on the piezoelectric film, adhering a support on the second electrode film, and peeling off a multilayered structure including at least the first electrode film, the piezoelectric film, the second electrode film, and the support from the substrate.Type: ApplicationFiled: March 26, 2010Publication date: September 30, 2010Applicant: Toshiba Storage Device CorporationInventors: Shigeyoshi UMEMIYA, Tsuyoshi AOKI
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Publication number: 20100073823Abstract: A piezoelectric actuator includes a piezoelectric body; a first and a second electrode for applying an electric field to the piezoelectric body in order to polarize the piezoelectric body in a first direction at an elevated temperature, at least one of the first and the second electrode including a material whose resistivity decreases with elevation of the temperature; and a third and a fourth electrode for applying an electric field to the piezoelectric body in a second direction across the first direction of the polarization of the piezoelectric body in order to actuate the piezoelectric body.Type: ApplicationFiled: September 16, 2009Publication date: March 25, 2010Applicant: FUJITSU LIMITEDInventors: Tsuyoshi Aoki, Kazuaki Kurihara, Shigeyoshi Umemiya
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Patent number: 7682124Abstract: A tractor with a backhoe is disclosed. The backhoe is mounted to a rear portion of the tractor. The backhoe has a boom, an arm pivotally supported to a leading end of the boom, a bucket pivotally supported to a leading end of the arm, a boom cylinder for operating the boom, an arm cylinder for operating the arm and a bucket cylinder for operating the bucket. The tractor includes a frame attached to a rear portion of the tractor, a swing bracket supported to a rear portion of the frame to be pivotable about a vertical axis, a control valve unit having control valves for controlling the boom cylinder, the arm cylinder and the bucket cylinder and a hose unit for feeding pressure oil from the control valve unit to the boom cylinder, the arm cylinder and the bucket cylinder. The wing bracket includes a first opening open to the front side and a second opening open to the rear side. The control valve unit is disposed, in its plan view, on an extension line of the first opening and the second opening.Type: GrantFiled: March 14, 2006Date of Patent: March 23, 2010Assignee: Kubota CorporationInventors: Eiji Miyazaki, Shuichi Takeshita, Tsuyoshi Aoki
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Patent number: 7650174Abstract: A resonator pattern made of superconductive material is disposed over a first surface of a base substrate made of dielectric. An adjustment substrate made of dielectric is disposed facing the first surface at a distance from the first surface. The adjustment substrate is supported by a support mechanism for supporting the adjustment substrate in such a manner capable of changing an angle between the first surface and a surface of the adjustment substrate facing the base substrate. A superconductive filter is provided which can shift a center frequency of a filter band and suppress disturbance of a waveform of a filter characteristic, with a simple method.Type: GrantFiled: November 9, 2006Date of Patent: January 19, 2010Assignee: Fujitsu LimitedInventors: Tsuyoshi Aoki, Kazuaki Kurihara, Teru Nakanishi, Akihiko Akasegawa, Manabu Kai, Kazunori Yamanaka
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Patent number: 7595581Abstract: A thin-film piezoelectric device is disclosed that includes a substrate, a piezoelectric pattern disposed on the substrate, the piezoelectric pattern including plural spaced-apart piezoelectric regions, and a pair of electrodes that apply an electric field to the piezoelectric pattern.Type: GrantFiled: July 17, 2006Date of Patent: September 29, 2009Assignee: Fujitsu LimitedInventors: Tsuyoshi Aoki, Kazuaki Kurihara, Shigeyoshi Umemiya
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Publication number: 20090237841Abstract: A magnetic head includes a head element recording and reading data on and from a recording medium, a slider having an air bearing surface facing the recording medium, and having the head element forming surface which the head element being present on, and a piezoelectric device attached above the head element forming surface and the head element, and configured to displace a part of the head forming surface in a direction perpendicular to the air bearing surface.Type: ApplicationFiled: March 16, 2009Publication date: September 24, 2009Applicant: FUJITSU LIMITEDInventors: Kazuaki KURIHARA, Masaharu HIDA, Shigeyoshi UMEMIYA, Tsuyoshi AOKI
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Publication number: 20090219653Abstract: A head slider includes a slider substrate, an actuator provided in an end portion of the slider substrate and equipped with a piezoelectric element, and a magnetic head disposed on a side opposite to the slider substrate with interposition of the actuator. The piezoelectric element has piezoelectric bodies polarized along a first direction connecting the slider substrate and the magnetic head. The piezoelectric element has electrodes which apply an electric field to the piezoelectric bodies along a second direction intersecting the first direction.Type: ApplicationFiled: February 27, 2009Publication date: September 3, 2009Applicant: FUJITSU LIMITEDInventors: Tsuyoshi Aoki, Kazuaki Kurihara, Shigeyoshi Umemiya