Patents by Inventor Koichi Kato

Koichi Kato 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).

  • Publication number: 20120142180
    Abstract: A method of manufacturing a semiconductor device according to an embodiment, includes: forming a stack structure by alternately stacking control gate electrodes and interlayer insulating films; forming a through-hole that penetrates through the stack structure in a stacking direction of the control gate electrodes and the interlayer insulating films; forming a first insulating film that covers an inner surface of the through-hole; forming a charge storage layer that covers an inner surface of the first insulating film; forming a second insulating film that covers an inner surface of the charge storage layer; forming a semiconductor layer that covers an inner surface of the second insulating film; and oxidizing an interface between the semiconductor layer and the second insulating film by performing a heat treatment in an atmosphere containing O2 gas at a temperature of 600° C. or lower.
    Type: Application
    Filed: February 10, 2012
    Publication date: June 7, 2012
    Inventors: Daisuke MATSUSHITA, Koichi KATO, Yuichiro MITAINI
  • Patent number: 8145101
    Abstract: A developing device capable of conveying discharged developer to the outside of the device well by preventing developer from firmly adhering within a discharge conveyance path, as well as an image forming apparatus and a process cartridge having this developing device.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: March 27, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Junichi Terai, Koichi Kato, Koichi Sakata, Maiko Koeda, Kentaroh Tomita, Kiyonori Tsuda
  • Patent number: 8126373
    Abstract: A toner supply device includes a toner container, a transport-path forming member, an opening, a shutter member, and a first seal member. The opening is provided at a side wall of the transport-path forming member. The shutter member is movable between a closed position to close the transport path by being inserted in the opening and an open position. The first seal member fills a gap between an inner wall of the opening and the shutter member in a toner transport direction in which the toner is transported through the transport path. When the shutter member is inserted in the opening, the shutter member is elastically deformable in a deformation direction perpendicular to both the toner transport direction and a moving direction of the shutter member, and when the shutter member is not inserted in the opening, the shutter member is wider than the opening in the deformation direction.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: February 28, 2012
    Assignee: Ricoh Company Limited
    Inventors: Kohichi Utsunomiya, Koichi Kato, Junichi Terai, Klyonori Tsuda, Emi Kita, Satoru Yoshida, Yuki Oshikawa
  • Patent number: 8126346
    Abstract: An apparatus and method for image fixing are disclosed. A fixing device includes a fixing member, a pressure member, a heater, and a pressure controller. The fixing member and the pressure member face with each other to form a nip. The heater heats a surface of the fixing member when the fixing member rotates. The pressure controller changes a pressure generated at the nip, according to an operation of the fixing device.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: February 28, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Jun Yura, Koichi Kato, Hiroshi Nakai, Kazumi Suzuki, Kei Yasutomi, Hideki Kosugi, Hirokatsu Suzuki, Ichiro Kadota
  • Patent number: 8064807
    Abstract: A developer supply system includes a container, a memory, and a positioning mechanism. The container has a deformable bag formed of flexible material to accommodate developer therein. The memory is attached to a given planar surface of the deformable bag to store information for communication to the image forming apparatus. The positioning mechanism holds the container therein while maintaining the given planar surface in position relative to the image forming apparatus when the deformable bag collapses as it discharges developer. An image forming apparatus employing such a developer supply system is also disclosed.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: November 22, 2011
    Assignee: Ricoh Company Limited
    Inventors: Maiko Koeda, Koichi Kato, Emi Kita, Keiko Matsumoto, Takuzi Yoneda, Yuki Oshikawa, Kohichi Utsunomiya
  • Publication number: 20110234135
    Abstract: A motor control device that has a high-frequency component, and a DC bias component that has a magnitude which causes a motor to be magnetically saturated and take on a certain value over a predetermined period, and is positively and negatively symmetrical are impressed as an observation command on a d-axis current command. The polarity of the magnetic pole of a permanent magnet is identified based on a relationship of large and small magnitudes between a first amplitude, which is attained during a period during which a DC bias component takes on a positive certain value, among amplitudes of a high- frequency component contained in a d-axis response voltage computed based on a feedback current respondent to the observation command, and a second amplitude attained during a period during which the DC bias component takes on a negative certain value.
    Type: Application
    Filed: February 1, 2011
    Publication date: September 29, 2011
    Applicant: AISIN AW CO., LTD.
    Inventors: Koichi KATO, Keisuke NISHIMURA, Zhiqian CHEN, Subrata SAHA
  • Patent number: 8010020
    Abstract: The developer conveyance amount on the upstream side of an agitation conveyance path in a developer conveyance direction becomes larger than the amount of developer to be transported from a recovery conveyance path to the agitation conveyance path, by making the developer conveyance amount on the upstream side of an agitating screw in the developer conveyance direction equal to or larger than the developer conveyance amount on the downstream side of a recovery screw in the developer conveyance direction. Accordingly, the bulk of the developer existing on the downstream side of the recovery conveyance path in the developer conveyance direction can be prevented from reaching the level where the recovered developer re-adheres to a developing roller, and further the developer existing on the downstream side of the recovery conveyance path in the developer conveyance direction can be prevented from re-adhering to the developing roller.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: August 30, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Emi Kita, Koichi Kato, Kiyonori Tsuda, Yuki Oshikawa, Susumu Tateyama, Yoshitaka Fujinuma
  • Patent number: 7991330
    Abstract: A developing unit includes a developer bearing member, a developer transporter, a developer conveyance system for directing the developer, including a supply path, a recovery path, and an agitation path, a developer supply opening through which the developer is supplied to the developer conveyance system, a developer supply device for supplying the developer from the developer supply opening to the developer conveyance system, a developer discharge device for discharging the developer outside the developing unit, a developer level rise detector for detecting increase in a level of the developer between the downstream end of the recovery path facing the developer bearing member in the direction of developer transport and a portion of the agitation path where the agitation path receives the collected developer from the recovery path, and a controller for controlling the developer discharge device based on the detection result provided by the developer level rise detector.
    Type: Grant
    Filed: August 6, 2008
    Date of Patent: August 2, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuki Oshikawa, Koichi Kato, Hiroyuki Okaji, Mugijirou Uno, Kiyonori Tsuda, Emi Kita, Keiko Matsumoto
  • Patent number: 7983577
    Abstract: An image forming apparatus including an image bearing member; a developing device forming a toner image; a toner supplying device including a toner container, a toner feeding passage, a pump, in which a first member is moved while rubbing a second member to feed a developer supplement including at least the toner, and a residual toner detector detecting the amount of the developer supplement remaining in the toner container. Even after the toner container achieves a near empty state, image forming operations are continued as long as a predetermined condition is satisfied while changing the pump's condition such that the pump is stopped, the ratio of the pump stopping period to the pump driving period is set to be greater than that before the near-empty detection, or the pump stopping period and the pump driving period are set to be longer than those before the near-empty detection.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: July 19, 2011
    Assignee: Ricoh Company Limited
    Inventors: Emi Kita, Koichi Kato, Maiko Koeda
  • Publication number: 20110155458
    Abstract: A vehicle electrical conduction path includes plural power cables, a braided shield which bundles and shields the plural power cables, a control cable, a metallic pipe which accommodates the control cable separately from the plural power cables, and a flexible resin tube which covers a periphery of the metallic pipe and the plural power cables bundled with the braided shield and arranged along the metallic pipe.
    Type: Application
    Filed: December 22, 2010
    Publication date: June 30, 2011
    Applicant: HITACHI CABLE, LTD.
    Inventors: Koichi Kato, Hajime Maejo, Toshiyuki Horikoshi
  • Patent number: 7962071
    Abstract: A developing device which can stably supply a developer to a latent image carrier by preventing the scattered developer from being discharged and thereby preventing the developer from being discharged despite that the amount of developer within the developing device does not increase, and an image forming apparatus using the developing device. A block member serving as a scattered developer discharge prevention member is provided so as to block a path through which the developer scattered as a result of a conveyance operation of a supply screw serving as a developer conveying member moves toward a developer discharge port. Accordingly, the scattered developer is prevented from reaching the developer discharge port and being discharged therefrom.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: June 14, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Kiyonori Tsuda, Koichi Kato, Yuki Oshikawa, Yasufumi Takahashi, Eriko Maruyama, Koichi Sakata, Hitoshi Ishibashi, Kentaroh Tomita, Mugijirou Uno, Keiko Matsumoto, Kohichi Utsunomiya
  • Patent number: 7937027
    Abstract: A developing device includes a rotator that rotates around a shaft, and a bearing element that supports the shaft to a housing. A sliding element formed of a composite material that contains self-lubricating thermoplastic olefin resin as a base material is used as the bearing element. The sliding element formed of the composite material has at least a ratio of numerical values of “Rockwell hardness”/“bending elastic modulus” in a range from 25 to 45, and provides a sliding surface of which a frictional coefficient is lower than that of the sliding element formed of the base material.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: May 3, 2011
    Assignees: Ricoh Company Limited, STARLITE Co., Ltd.
    Inventors: Koichi Kato, Junichi Terai, Kiyonori Tsuda, Emi Kita, Satoru Yoshida, Shinya Kikutani, Takashi Tanaka
  • Patent number: 7931280
    Abstract: The present invention provides an electric discharge lamp control unit which is capable of enhancing air-tightness in the electric discharge lamp while suppressing increase in the size thereof. The electric discharge lamp control unit for controlling lighting ON/OFF of an electric discharge lamp includes an electronic component in which a circuit element is implemented and which has a connector section for connection to an outside thereof; and a casing for housing the electronic component which includes a base on which the electronic component is mounted and a cover which covers the base. The thorough hole is sealed with the electronic components on the inner side of the base.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: April 26, 2011
    Assignee: Denso Corporation
    Inventor: Koichi Kato
  • Publication number: 20110067460
    Abstract: According to one embodiment, a USB memory device includes a cylinder lock, a storage unit, and a control unit. The storage unit is capable of storing data. The control unit prohibits at least part of access to the storage unit from an outside when the cylinder lock is locked.
    Type: Application
    Filed: September 23, 2010
    Publication date: March 24, 2011
    Inventors: Yasuyuki NIWA, Toyoaki Makino, Koichi Kato, Hongxing Wang, Hiroshi Yoshida
  • Patent number: 7911799
    Abstract: The present invention provides an electronic control unit which is capable of suppressing harmful effects caused by liquid while suppressing increase in the size thereof. The electronic control unit includes an electronic component in which a circuit element coated with an anti-splash agent is implemented, a casing, and a liquid discharge portion. The casing includes a base on which the electronic component is mounted, a cover which is connected to the base in the state where the electronic component is covered with the cover, and a connector which electrically connects the electronic component to the outside. The liquid discharge portion includes a flow passage in which liquid which has intruded into an internal space in the casing formed by the base, the cover and the connector for housing the electronic component flows, and an opening portion which discharges the liquid to the outside of the internal space via the flow passage.
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: March 22, 2011
    Assignee: Denso Corporation
    Inventor: Koichi Kato
  • Patent number: 7902612
    Abstract: It is made possible to reduce the interface resistance at the interface between the nickel silicide film and the silicon. A semiconductor manufacturing method includes: forming an impurity region on a silicon substrate, with impurities being introduced into the impurity region; depositing a Ni layer so as to cover the impurity region; changing the surface of the impurity region into a NiSi2 layer through annealing; forming a Ni layer on the NiSi2 layer; and silicidating the NiSi2 layer through annealing.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: March 8, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takashi Yamauchi, Atsuhiro Kinoshita, Yoshinori Tsuchiya, Junji Koga, Koichi Kato, Nobutoshi Aoki, Kazuya Ohuchi
  • Publication number: 20110003481
    Abstract: It is made possible to restrain generation of defects at the time of insulating film formation. A method for manufacturing a semiconductor device, includes: placing a semiconductor substrate into an atmosphere, thereby forming a nitride film on a surface of the semiconductor substrate, the atmosphere containing a first nitriding gas nitriding the surface of the semiconductor substrate and a first diluent gas not actually reacting with the semiconductor substrate, the ratio of the sum of the partial pressure of the first diluent gas and the partial pressure of the first nitriding gas to the partial pressure of the first nitriding gas being 5 or higher, and the total pressure of the atmosphere being 40 Torr or lower.
    Type: Application
    Filed: July 1, 2010
    Publication date: January 6, 2011
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Daisuke Matsushita, Koichi Muraoka, Koichi Kato, Yasushi Nakasaki, Yuichiro Mitani
  • Patent number: 7846731
    Abstract: The present invention relates to a method of introducing nucleic acids into cells by electroporation, comprising the step (A) of loading nucleic acids to the surface of an electrode; the step (B) of adhering cells on the obtained nucleic acid-loaded electrode surface; and the step (C) of applying electric pulses to the adhering cells. According to this method, not only efficient introduction of a gene into cells but also gene introduction at desirable timing and at desirable sites can be performed without damaging the adhering cells.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: December 7, 2010
    Assignee: Kyoto University
    Inventors: Hiroo Iwata, Koichi Kato, Fumio Yamauchi
  • Patent number: 7824210
    Abstract: A connector includes a male connector part composed of a male terminal, a first main body to which the male terminal is attached, and a first terminal housing portion composed of a first housing opening portion in which an end of the male terminal is exhibited and a predetermined housing space in which the male terminal is housed, a female connector part composed of a female terminal into which the male terminal is inserted, the male terminal being electrically connected to the female terminal by fitting the male connector part with the female connector part, a holding means inside the female terminal for holding the male terminal in a vertical direction, and a touch protecting means inside the first terminal housing portion for protecting the male terminal housed in the predetermined housing space from being touched by a foreign body.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: November 2, 2010
    Assignee: Hitachi Cable, Ltd.
    Inventors: Taichi Oka, Koichi Kato, Hideaki Takehara, Sachio Suzuki
  • Patent number: 7816215
    Abstract: A semiconductor device manufacturing method comprises: forming a gate insulative film on a semiconductor substrate by: forming a first nitride film on the substrate; forming a first oxide film and a second oxide film, the first oxide film being between the substrate and the first nitride film, the second oxide film being on the first nitride film; and nitriding the second oxide film to form, on the first nitride film, one of either: a second nitride film or an SiON film; and forming a gate electrode on the gate insulative film; wherein the equivalent oxide thickness of the gate insulative film is equal to or less than 1 nm.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: October 19, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Daisuke Matsushita, Koichi Muraoka, Seiji Inumiya, Koichi Kato, Kazuhiro Eguchi, Mariko Takayanagi, Yasushi Nakasaki