Patents by Inventor Kazuya Yamamoto
Kazuya Yamamoto 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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Publication number: 20170141047Abstract: A package includes a conductor base plate having a element fixed to an upper surface thereof, a side wall provided on the conductor base plate to surround the element, the side wall having a conductor portion electrically connected to the conductor base plate, a dielectric cap disposed on the side wall, a front-side metal film provided on an outer surface of the dielectric cap, a first back-side metal film provided on an inner surface of the dielectric cap such that a center of the first back-side metal film approximately coincides with a center of a surface of the dielectric cap which faces the conductor base plate, and a plurality of vias passing through the dielectric cap to achieve electrical connection between the front-side metal film and the first back-side metal film and between the front-side metal film and the conductor portion oldie side wall.Type: ApplicationFiled: July 18, 2016Publication date: May 18, 2017Applicant: Mitsubishi Electric CorporationInventors: Miyo MIYASHITA, Kazuya YAMAMOTO, Hiroaki MAEHARA
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Publication number: 20170126223Abstract: A semiconductor device includes: a depletion-type field-effect transistor including a gate terminal, a drain terminal and a source terminal; a group III-V heterojunction bipolar transistor including a base terminal, an emitter terminal electrically connected to the gate terminal and a collector terminal connected to same potential as that of the source terminal; a first resistor connected between the base terminal and the emitter terminal; and a second resistor connected between the base terminal and the collector terminal.Type: ApplicationFiled: June 6, 2016Publication date: May 4, 2017Applicant: Mitsubishi Electric CorporationInventors: Shohei IMAI, Kazuya YAMAMOTO, Yoshinobu SASAKI, Shinichi MIWA
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Patent number: 9604814Abstract: According to an embodiment, there is provided a sheet processing apparatus includes a stacking unit that stacks a sheet conveyed thereto; a first alignment unit that aligns the sheet or a bundle of sheets stacked in the stacking unit in a sheet conveying direction; a second alignment unit that aligns the sheet or the bundle of sheets stacked in the stacking unit in a direction orthogonal to the sheet conveying direction; a pressing unit that presses the bundle of sheets at an end portion thereof on a predetermined one side; and a control unit that causes at least one of the first and second alignment units to execute an alignment operation during a press operation of the sheet or the bundle of sheets performed by the pressing unit.Type: GrantFiled: January 12, 2015Date of Patent: March 28, 2017Assignee: RICOH COMPANY, LIMITEDInventors: Tomohiro Furuhashi, Masahiro Tamura, Shuuya Nagasako, Keisuke Sugiyama, Kazuya Yamamoto, Kyosuke Nakada, Tomomichi Hoshino, Akira Kunieda, Takahiro Watanabe, Takamasa Matsumoto, Junya Suzuki, Youhei Niitsuma, Kazunori Konno, Kiichiro Goto
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Patent number: 9561927Abstract: A sheet discharging device includes a shift tray 202 on which a sheet P1 is stacked, a discharging roller 6 that discharges a sheet P2 onto the shift tray 202, a blowing device 230 that sends air to a lower surface of the sheet P2 discharged by the discharging roller 6, a blocking member 231 that blocks air sent to the lower surface of the sheet P2 from a blowing port 230-2 of the blowing device 230, and a control unit that controls the blocking amount of the blocking member 231. The blocking amount is determined based upon sheet information including sheet-type information, sheet-size information, and sheet-thickness information, for example.Type: GrantFiled: November 25, 2015Date of Patent: February 7, 2017Assignee: RICOH COMPANY, LIMITEDInventors: Tomomichi Hoshino, Masahiro Tamura, Shuuya Nagasako, Tomohiro Furuhashi, Keisuke Sugiyama, Kyosuke Nakada, Kazuya Yamamoto, Akira Kunieda, Takahiro Watanabe, Junya Suzuki, Kazunori Konno, Youhei Niitsuma, Takamasa Matsumoto, Kiichiro Goto, Kazuhiko Kitano, Takashi Fukumoto, Yasuo Niikura, Satoru Takano, Hidetoshi Kojima, Kei Sasaki, Yasushi Tsuruoka, Shintaro Matsumoto, Ryo Takahashi, Yuuta Mori, Kohjiroh Haga
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Patent number: 9533852Abstract: A sheet ejecting device includes: a sheet ejecting unit configured to eject a sheet; a stacking unit on which the sheet that is ejected by the ejecting unit is stacked; an aligning unit configured to align the sheet in a direction orthogonal to the direction in which the sheet is ejected; and a blowing unit configured to be provided to the aligning unit and blow a wind toward the ejected sheet.Type: GrantFiled: June 15, 2015Date of Patent: January 3, 2017Assignee: RICOH COMPANY, LIMITEDInventors: Junya Suzuki, Kiichiro Goto, Masahiro Tamura, Shuuya Nagasako, Keisuke Sugiyama, Tomohiro Furuhashi, Kyosuke Nakada, Kazuya Yamamoto, Tomomichi Hoshino, Akira Kunieda, Takahiro Watanabe, Takamasa Matsumoto, Kazunori Konno, Youhei Niitsuma
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Publication number: 20160308499Abstract: In the present invention, in addition to arranging a plurality of amplifying elements in a staggered manner, signal path lengths from an input-side divider to gate pads of the plurality of amplifying elements are equalized, and signal path lengths from drain pads of the plurality of amplifying elements to an output-side combiner are equalized.Type: ApplicationFiled: January 12, 2016Publication date: October 20, 2016Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Naoki KOSAKA, Hiroaki MAEHARA, Ko KANAYA, Miyo MIYASHITA, Kazuya YAMAMOTO
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Publication number: 20160185552Abstract: A sheet discharging device includes a shift tray 202 on which a sheet P1 is stacked, a discharging roller 6 that discharges a sheet P2 onto the shift tray 202, a blowing device 230 that sends air to a lower surface of the sheet P2 discharged by the discharging roller 6, a blocking member 231 that blocks air sent to the lower surface of the sheet P2 from a blowing port 230-2 of the blowing device 230, and a control unit that controls the blocking amount of the blocking member 231. The blocking amount is determined based upon sheet information including sheet-type information, sheet-size information, and sheet-thickness information, for example.Type: ApplicationFiled: November 25, 2015Publication date: June 30, 2016Applicant: Ricoh Company, LIMITEDInventors: Tomomichi HOSHINO, Masahiro TAMURA, Shuuya NAGASAKO, Tomohiro FURUHASHI, Keisuke SUGIYAMA, Kyosuke NAKADA, Kazuya YAMAMOTO, Akira KUNIEDA, Takahiro WATANABE, Junya SUZUKI, Kazunori KONNO, Youhei NIITSUMA, Takamasa MATSUMOTO, Kiichiro GOTO, Kazuhiko KITANO, Takashi FUKUMOTO, Yasuo NIIKURA, Satoru TAKANO, Hidetoshi KOJIMA, Kei SASAKI, Yasushi TSURUOKA, Shintaro MATSUMOTO, Ryo TAKAHASHI, Yuuta MORI, Kohjiroh HAGA
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Patent number: 9379402Abstract: An anion conducting electrolyte membrane with high performance where the electric conductivity and the water uptake are balanced, and a method of manufacturing the same are disclosed. The anion conducting electrolyte membrane comprises: a polymeric material which consists of fluorine polymer, olefinic polymer, or aromatic polymer; weak base quaternary salt obtained by the reaction of grafts introduced by graft polymerizing vinyl monomer which contains halogenated alkyl groups using radiation and strong organic bases.Type: GrantFiled: March 5, 2013Date of Patent: June 28, 2016Assignees: Japan Atomic Energy Agency, Daihatsu Motor Co., Ltd.Inventors: Kimio Yoshimura, Hiroshi Koshikawa, Tetsuya Yamaki, Masaharu Asano, Yasunari Maekawa, Hideyuki Shishitani, Hirohisa Tanaka, Susumu Yamaguchi, Koichiro Asazawa, Kazuya Yamamoto, Fumihiro Sanpei
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Publication number: 20160156178Abstract: An ESD protection circuit is connected in parallel to a MIM capacitor between a first terminal and a second terminal. First Schottky diodes are connected in series to each other and have anodes connected on the first terminal side and cathodes connected on the second terminal side. Second Schottky diodes are connected in series to each other and connected in anti-parallel to the first Schottky diodes. When an RF signal is inputted to neither the first terminal nor the second terminal, the first terminal has a higher DC voltage than that of the second terminal. The number of the first Schottky diodes is greater than the number of the second Schottky diodes. The number of the second Schottky diodes is set such that an amplitude of the RF signal does not attenuate to predetermined amplitude of the RF signal when the RF signal passes through the MIM capacitor.Type: ApplicationFiled: September 3, 2015Publication date: June 2, 2016Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Kazuya YAMAMOTO, Miyo MIYASHITA, Suguru MAKI
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Patent number: 9348291Abstract: An image forming apparatus and an image forming system, the image forming apparatus including a memory to store first side position and second side position detected by a side end detector, a correction mechanism to movably support at least a registration roller of a first sheet conveyor and a second sheet conveyor in a direction perpendicular to a sheet conveying direction, and a controller to calculate a deviation between the first side position and the second side position, and to set the deviation as a correction amount of the correction mechanism.Type: GrantFiled: October 9, 2015Date of Patent: May 24, 2016Assignee: RICOH COMPANY, LTD.Inventor: Kazuya Yamamoto
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Patent number: 9331373Abstract: Disclosed is a directional coupler including a first hollow portion that is disposed in a first ground conductor and is arranged directly above a first signal conductor and a second signal conductor, and that is constructed of a discontinuous structure that has a function of delaying the phase and that is small with respect to the one-quarter wavelength of an operating frequency.Type: GrantFiled: March 25, 2014Date of Patent: May 3, 2016Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Akimichi Hirota, Tetsu Owada, Kazuhiro Iyomasa, Shinsuke Watanabe, Kazuya Yamamoto
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Patent number: 9316986Abstract: A recording medium discharging device includes a discharging unit configured to discharge a recording medium from a discharge port; a tray unit on which the recording medium discharged from the discharging unit is stacked; and an air blower configured to blow air in a direction substantially parallel to a direction in which the recording medium is discharged.Type: GrantFiled: May 20, 2015Date of Patent: April 19, 2016Assignee: Ricoh Company, LimitedInventors: Shuuya Nagasako, Masahiro Tamura, Tomohiro Furuhashi, Keisuke Sugiyama, Yuusuke Shibasaki, Kyosuke Nakada, Kazuya Yamamoto, Junya Suzuki, Kazunori Konno, Yasuo Niikura, Tomomichi Hoshino, Akira Kunieda, Takahiro Watanabe, Tomohiro Yoshizaki, Kiichiro Goto
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Publication number: 20160103410Abstract: An image forming apparatus and an image forming system, the image forming apparatus including a memory to store first side position and second side position detected by a side end detector, a correction mechanism to movably support at least a registration roller of a first sheet conveyor and a second sheet conveyor in a direction perpendicular to a sheet conveying direction, and a controller to calculate a deviation between the first side position and the second side position, and to set the deviation as a correction amount of the correction mechanism.Type: ApplicationFiled: October 9, 2015Publication date: April 14, 2016Inventor: Kazuya YAMAMOTO
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Patent number: 9306500Abstract: A cascode amplifier includes: a first transistor having a gate to which a signal is input, a grounded source, and a drain; a second transistor having a gate, a source connected to the drain of the first transistor, and a drain; a load connected to the drain of the second transistor; a DC-DC converter supplying a supply voltage, which is variable according to output power, to the drain of the second transistor via the load; and a first bias circuit supplying a voltage, which is a function of the supply voltage, to the gate of the second transistor.Type: GrantFiled: August 19, 2014Date of Patent: April 5, 2016Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yoshinori Takahashi, Miyo Miyashita, Kazuya Yamamoto
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Patent number: 9260264Abstract: A sheet discharging device includes a shift tray 202 on which a sheet P1 is stacked, a discharging roller 6 that discharges a sheet P2 onto the shift tray 202, a blowing device 230 that sends air to a lower surface of the sheet P2 discharged by the discharging roller 6, a blocking member 231 that blocks air sent to the lower surface of the sheet P2 from a blowing port 230-2 of the blowing device 230, and a control unit that controls the blocking amount of the blocking member 231. The blocking amount is determined based upon sheet information including sheet-type information, sheet-size information, and sheet-thickness information, for example.Type: GrantFiled: March 24, 2014Date of Patent: February 16, 2016Assignee: RICOH COMPANY, LIMITEDInventors: Tomomichi Hoshino, Masahiro Tamura, Shuuya Nagasako, Tomohiro Furuhashi, Keisuke Sugiyama, Kyosuke Nakada, Kazuya Yamamoto, Akira Kunieda, Takahiro Watanabe, Junya Suzuki, Kazunori Konno, Youhei Niitsuma, Takamasa Matsumoto, Kiichiro Goto, Kazuhiko Kitano, Takashi Fukumoto, Yasuo Niikura, Satoru Takano, Hidetoshi Kojima, Kei Sasaki, Yasushi Tsuruoka, Shintaro Matsumoto, Ryo Takahashi, Yuuta Mori, Kohjiroh Haga
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Patent number: 9257947Abstract: A semiconductor device includes a power amplifier for amplifying RF signals in multiple frequency bands, an output matching circuit connected to an output of the power amplifier, a first capacitor connected at a first end to an output of the output matching circuit, multiple output paths, a switch connected to a second end of the first capacitor and directing each of the RF signals to a respective one of the output paths in accordance with frequency band of the each of the RF signals, and multiple second capacitors. Each second capacitor is connected in series to a respective one of the output paths. The switch and either the first capacitor or the second capacitors, or both the first and second capacitors, are integrated as a single monolithic microwave integrated circuit.Type: GrantFiled: June 25, 2014Date of Patent: February 9, 2016Assignee: Mitsubishi Electric CorporationInventors: Kenichi Horiguchi, Masakazu Hirobe, Satoshi Miho, Yoshinobu Sasaki, Kazuya Yamamoto
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Patent number: 9221647Abstract: A sheet folding apparatus includes: a folded part forming unit that forms a folded part on the sheet by nipping a curved portion formed on a part of the sheet between an upstream first sheet conveying unit and a downstream second sheet conveying unit by holding a part of the sheet by the first sheet conveying unit and applying conveying force to the sheet to reverse the sheet upstream by the second sheet conveying unit; and a sheet leading end detection unit disposed downstream of or at almost same position as the second sheet conveying unit. The sheet is conveyed based on a detection timing of the sheet leading end detection unit such that the leading end of the sheet protrudes by a predetermined protrusion amount from the second sheet conveying unit immediately before applying conveying force to the sheet to reverse the sheet.Type: GrantFiled: November 27, 2013Date of Patent: December 29, 2015Assignee: RICOH COMPANY, LIMITEDInventors: Tomohiro Furuhashi, Shuuya Nagasako, Michitaka Suzuki, Kazuya Yamamoto, Kyosuke Nakada, Akira Kunieda, Takahiro Watanabe, Yuji Suzuki, Kiichiro Goto
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Publication number: 20150354062Abstract: A thin film forming method for forming a thin film on a workpiece accommodated within a reaction chamber includes a first operation of supplying a first source gas and a second source gas into the reaction chamber, and a second operation of stopping the supply of the first source gas, supplying the second source gas into the reaction chamber and setting an internal pressure of the reaction chamber higher than an internal pressure of the reaction chamber set in the first operation. The first operation and the second operation are alternately repeated a plurality of times.Type: ApplicationFiled: August 18, 2015Publication date: December 10, 2015Inventors: Kazuya YAMAMOTO, Yuichi ITO
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Publication number: 20150353315Abstract: A sheet ejecting device includes: a sheet ejecting unit configured to eject a sheet; a stacking unit on which the sheet that is ejected by the ejecting unit is stacked; an aligning unit configured to align the sheet in a direction orthogonal to the direction in which the sheet is ejected; and a blowing unit configured to be provided to the aligning unit and blow a wind toward the ejected sheet.Type: ApplicationFiled: June 15, 2015Publication date: December 10, 2015Applicant: Ricoh Company, LimitedInventors: Junya SUZUKI, Kiichiro GOTO, Masahiro TAMURA, Shuuya NAGASAKO, Keisuke SUGIYAMA, Tomohiro FURUHASHI, Kyosuke NAKADA, Kazuya YAMAMOTO, Tomomichi HOSHINO, Akira KUNIEDA, Takahiro WATANABE, Takamasa MATSUMOTO, Kazunori KONNO, Youhei NIITSUMA
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Patent number: 9203368Abstract: A power amplifier includes: a first transistor having a gate, a drain, and a source that is grounded; a second transistor having a gate, a drain, and a source that is connected to the drain of the first transistor; a capacitor connected between the gate of the second transistor and a grounding point; an idling current control circuit having a positive temperature coefficient and making an idling current flowing through the first transistor proportional to an ambient temperature; and a drain voltage control circuit having a positive temperature coefficient and making a drain voltage on the first transistor proportional to the ambient temperature.Type: GrantFiled: April 23, 2014Date of Patent: December 1, 2015Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Miyo Miyashita, Yoshinori Takahashi, Kazuya Yamamoto