Patents by Inventor Kazuhisa Sakamoto

Kazuhisa Sakamoto 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: 20240083750
    Abstract: There is provided a method for producing a carbon material, including a carbon generation step of causing carbon dioxide to react with a reducing agent to generate carbon, in which, as the reducing agent, an oxygen-deficient iron oxide represented by Fe3O4-? (where ? is 1 or more and less than 4), which is obtained by reducing magnetite while maintaining a crystal structure, or an oxygen-completely deficient iron (?=4) which is obtained by completely reducing magnetite is used.
    Type: Application
    Filed: January 28, 2022
    Publication date: March 14, 2024
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Wenbin Dai, Nobutake Horiuchi, Kazuhisa Inada, Tatsuya Fukuda, Miki Itou, Yayoi Taneichi, Yuko Sakamoto
  • Patent number: 8482539
    Abstract: An electronic pen transmits pen information to a controller corresponding to detection of a touch condition, and thereafter turns ON a connecting switch that disconnects electrical connection between the tip portion and the grip portion of the pen that are provided in a state of being electrically disconnected from each other so as to cause a pen input acceptance state. The controller determines that position detection information is from the electronic pen when the position detection information is received from a position detecting device after the pen information is received from the electronic pen, while the controller determines that position detection information is from a finger when the position detection information is received from the position detecting device without receiving the pen information from the electronic pen.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: July 9, 2013
    Assignee: Panasonic Corporation
    Inventors: Toshiyuki Ogawa, Toshihito Tanaka, Kazuhisa Sakamoto, Tatsuhito Ueno, Yuuji Toyomura
  • Publication number: 20120003420
    Abstract: A honeycomb structure body has a honeycomb base body and a pair of electrodes composed of conductive ceramic layers and intermediate layers. The honeycomb base body made of porous ceramics containing SiC is comprised of a cell formation part and an outer peripheral part. The outer peripheral part covers the cell formation part. Each electrode is comprised of a conductive ceramic layer and an intermediate layer. The conductive ceramic layers containing SiC, Si and C are formed at two opposite positions on the outer peripheral part observed from a diameter direction. The intermediate layers containing SiC, Si and C are formed in the outer peripheral part at the parts which face the conductive ceramic layers. The honeycomb structure body satisfies a relationship of 0.5?t/T?1, where “t” indicates the thickness of the intermediate layer and “T” indicates the thickness of the outer peripheral part.
    Type: Application
    Filed: July 1, 2011
    Publication date: January 5, 2012
    Applicants: TOKAI KONETSU KOGYO CO., LTD., DENSO CORPORATION
    Inventors: Takahiro Betsushiyo, Hiromasa Aoki, Kazuhisa Sakamoto
  • Patent number: 8060244
    Abstract: An object of the present invention is to perform replacement of parts of a substrate processing apparatus more rapidly than that by the prior art. The present invention is a substrate processing apparatus constituted of a plurality of component parts for performing predetermined processing for a substrate, identification marks being attached to the respective component parts, the apparatus including: a storage unit for storing part information on each of the component parts necessary when placing an order for a component part, in correspondence with the identification mark; an input unit for inputting an identification mark of a component part to be ordered; and a display unit for displaying the part information in the storage unit corresponding to the inputted identification mark.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: November 15, 2011
    Assignee: Tokyo Electron Limited
    Inventors: Takashi Aiuchi, Akihito Suzuki, Hirotsugu Kamamoto, Shuichi Yonemura, Takashi Imafu, Kazuhisa Sakamoto
  • Publication number: 20110169756
    Abstract: An electronic pen transmits pen information to a controller corresponding to detection of a touch condition, and thereafter turns ON a connecting switch that disconnects electrical connection between the tip portion and the grip portion of the pen that are provided in a state of being electrically disconnected from each other so as to cause a pen input acceptance state. The controller determines that position detection information is from the electronic pen when the position detection information is received from a position detecting device after the pen information is received from the electronic pen, while the controller determines that position detection information is from a finger when the position detection information is received from the position detecting device without receiving the pen information from the electronic pen.
    Type: Application
    Filed: January 10, 2011
    Publication date: July 14, 2011
    Applicant: PANASONIC CORPORATION
    Inventors: Toshiyuki OGAWA, Toshihito TANAKA, Kazuhisa SAKAMOTO, Tatsuhito UENO, Yuuji TOYOMURA
  • Patent number: 7736977
    Abstract: An object of the present invention is to provide a semiconductor device capable of radiating electron-beams only to a desired region without forming a layer for restricting the radiating rays. A source electrode 22 made of aluminum prevents the generation of bremsstrahlung even when the electron-beams are radiated to the source electrode in a exposed condition. Also, the source electrode having an opening 25 at above of a crystal defect region 11 is used as a mask when the electron-beams are radiated thereto. That is the source electrode made of aluminum can be used both as a wiring and a mask for the radiating rays.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: June 15, 2010
    Assignee: Rohm Co., Ltd.
    Inventor: Kazuhisa Sakamoto
  • Publication number: 20070293970
    Abstract: An object of the present invention is to perform replacement of parts of a substrate processing apparatus more rapidly than that by the prior art. The present invention is a substrate processing apparatus constituted of a plurality of component parts for performing predetermined processing for a substrate, identification marks being attached to the respective component parts, the apparatus including: a storage unit for storing part information on each of the component parts necessary when placing an order for a component part, in correspondence with the identification mark; an input unit for inputting an identification mark of a component part to be ordered; and a display unit for displaying the part information in the storage unit corresponding to the inputted identification mark.
    Type: Application
    Filed: August 17, 2007
    Publication date: December 20, 2007
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Takashi Aiuchi, Akihito Suzuki, Hirotsugu Kamamoto, Shuichi Yonemura, Takashi Imafu, Kazuhisa Sakamoto
  • Patent number: 7276764
    Abstract: An object of the present invention is to provide a semiconductor device capable of radiating electron-beams only to a desired region without forming a layer for restricting the radiating rays. A source electrode 22 made of aluminum prevents the generation of bremsstrahlung even when the electron-beams are radiated to the source electrode in a exposed condition. Also, the source electrode having an opening 25 at above of a crystal defect region 11 is used as a mask when the electron-beams are radiated thereto. That is the source electrode made of aluminum can be used both as a wiring and a mask for the radiating rays.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: October 2, 2007
    Assignee: Rohm Co., Ltd.
    Inventor: Kazuhisa Sakamoto
  • Publication number: 20060151829
    Abstract: An object of the present invention is to provide a semiconductor device capable of radiating electron-beams only to a desired region without forming a layer for restricting the radiating rays. A source electrode 22 made of aluminum prevents the generation of bremsstrahlung even when the electron-beams are radiated to the source electrode in a exposed condition. Also, the source electrode having an opening 25 at above of a crystal defect region 11 is used as a mask when the electron-beams are radiated thereto. That is the source electrode made of aluminum can be used both as a wiring and a mask for the radiating rays.
    Type: Application
    Filed: March 9, 2006
    Publication date: July 13, 2006
    Applicant: ROHM CO., LTD.
    Inventor: Kazuhisa Sakamoto
  • Patent number: 6897546
    Abstract: A semiconductor device which can suppress an electronic breakdown. In the semiconductor device, a base electrode is connected to a base region in a base contact region defined on a surface of the base region. An N-type region having the same conductivity type as an emitter region is provided beneath a boundary portion of the base contact region to surround the base contact region. In other words, a PN-type diode constituted by the P-type base region and the N-type region is provided beneath the boundary portion of the base contact region.
    Type: Grant
    Filed: September 6, 2000
    Date of Patent: May 24, 2005
    Assignee: Rohm Co., Ltd.
    Inventor: Kazuhisa Sakamoto
  • Patent number: 6891250
    Abstract: A base contact section of a planar structure electrically connecting a base electrode to a base region of a bipolar transistor is constructed of a repeating structure in a plan view, in which a high impurity concentration region of the same conductivity type as that of the base region and a region of the reverse conductivity type from that of the base region or low concentration region of the same conductivity type as that of the base region, arranged in an alternately manner starting with a high impurity concentration region of the same conductivity type as that of the base region from an emitter region side. With such a structure, accumulation of minor carriers in the base contact section can be suppressed, a high switching speed can be achieved and reduction in power consumption can be realized.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: May 10, 2005
    Assignee: Rohm Co., Ltd.
    Inventor: Kazuhisa Sakamoto
  • Patent number: 6885082
    Abstract: The present invention provides a semiconductor device having a bipolar transistor constructed so as to allow the adjustment of the base input signal voltage that switches on a transistor in which a diffusion region of a different conductivity type from that of the base region is formed at the contact of the base electrode, and to allow the base current to be controlled when a digital transistor is produced. A base electrode connection region 24 of an n+-type is provided to a p-type base region 12, and a zener voltage control diffusion region 25 of a p+-type is provided around the periphery of the base electrode connection region 24 so as to form a pn junction and undergo zener breakdown at the desired voltage. A resistor 26 composed of polysilicon is connected to the base electrode connection region 24 via a metal electrode 16a. As a result, this semiconductor device has a bipolar transistor in which a zener diode ZD and the resistor 26 are serially built into the base.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: April 26, 2005
    Assignee: Rohm Co., Ltd.
    Inventor: Kazuhisa Sakamoto
  • Publication number: 20040186622
    Abstract: An object of the present invention is to perform replacement of parts of a substrate processing apparatus more rapidly than that by the prior art. The present invention is a substrate processing apparatus constituted of, a plurality of component parts for performing predetermined processing for a substrate, identification marks being attached to the respective component parts, the apparatus including: a storage unit for storing part information on each of the component parts necessary when placing an order for a component part, in correspondence with the identification mark; an input unit for inputting an identification mark of a component part to be ordered; and a display unit for displaying the part information in the storage unit corresponding to the inputted identification mark.
    Type: Application
    Filed: January 8, 2004
    Publication date: September 23, 2004
    Inventors: Takashi Aiuchi, Akihito Suzuki, Hirotsugu Kamamoto, Shuichi Yonemura, Takashi Imafu, Kazuhisa Sakamoto
  • Patent number: 6747315
    Abstract: P-wells (21) are formed in, for example, a matrix in an N-type semiconductor layer (20). At an outer periphery of each of the P-wells (21) is formed, for example, a rectangular ring-shaped N+-type diffused source region (22), between which and an N-type semiconductor layer (20) which provides a drain region (23) is formed a channel region (26). A source electrode (33) is formed in such a manner as to be contact with the center portion of each of the P-wells (21) and the source region (22) in such a construction that a contact portion (40) of the P-well with the source electrode consists of P+-type regions and N+-type regions formed alternately. As a result, it is possible to rapidly eliminate the minority carrier generated in the P-well owing to a counter electromotive force etc., thus speeding the switching operations.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: June 8, 2004
    Assignee: Rohm Co., Ltd.
    Inventor: Kazuhisa Sakamoto
  • Patent number: 6740907
    Abstract: A junction field-effect transistor is formed by providing a p-type gate region in a surface of an n-type semiconductor layer and n-type drain and source regions sandwiching the gate region on the surface of the n-type semiconductor layer. A p-type diffusion region is formed at least in the region on the side of the drain close to the gate region on the surface of the n-type semiconductor layer. A drain electrode is formed so that it contacts with the p-type diffusion region. As a result, the junction FET can be reduced in drain-source leak current Idss to a small, stable value. Thus, a high-gain junction field-effect transistor is obtained which has small variation in performance among actual units manufactured.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: May 25, 2004
    Assignee: Rohm Co., Ltd.
    Inventor: Kazuhisa Sakamoto
  • Publication number: 20040065896
    Abstract: A junction field-effect transistor is formed by providing a p-type gate region in a surface of an n-type semiconductor layer and n-type drain and source regions sandwiching the gate region on the surface of the n-type semiconductor layer. A p-type diffusion region is formed at least in the region on the side of the drain close to the gate region on the surface of the n-type semiconductor layer. A drain electrode is formed so that it contacts with the p-type diffusion region. As a result, the junction FET can be reduced in drain-source leak current Idss to a small, stable value. Thus, a high-gain junction field-effect transistor is obtained which has small variation in performance among actual units manufactured.
    Type: Application
    Filed: October 4, 2002
    Publication date: April 8, 2004
    Inventor: Kazuhisa Sakamoto
  • Patent number: 6674147
    Abstract: Formed on the surface of an n-type semiconductor layer (21) taken as a collector region is a base region (22) consisting of a p-type region, and formed in the p-type region is an emitter region (23) consisting of an n+-type region. Further, provided in the base region is a base electrode connecting portion (24) consisting of an n+-type region, and a base electrode (26) is connected to the surface of the base electrode connecting portion, and an emitter electrode (27) and a collector electrode (28) are provided and connected electrically to the emitter region and the collector region (21), respectively. As a result, a semiconductor device is obtained which has the transistor in which the reduction in power consumption with a high withstand voltage can be achieved, and the fast switching speed is possible and the large current is obtained. Further a voltage-drive type bipolar transistor such as a digital transistor is obtained which is small in load capacity while establishing a desired drive voltage.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: January 6, 2004
    Assignee: Rohm Co., Ltd.
    Inventor: Kazuhisa Sakamoto
  • Patent number: 6614073
    Abstract: A semiconductor chip provided, at a lateral face thereof, with an electrode for external electric connection. Where a semiconductor chip has a plurality of electrodes, all the electrodes are preferably formed at one or more lateral faces of the semiconductor chip. Each electrode is preferably embedded in a groove which is formed in a lateral face of the semiconductor chip and which is opened laterally of the semiconductor chip. The semiconductor chip may be a discrete bipolar transistor element. In this case, each of the base electrode, the emitter electrode and the collector electrode is preferably formed at a lateral face of the semiconductor chip.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: September 2, 2003
    Assignee: Rohm Co., Ltd.
    Inventor: Kazuhisa Sakamoto
  • Publication number: 20030116783
    Abstract: The present invention provides a semiconductor device having a bipolar transistor constructed so as to allow the adjustment of the base input signal voltage that switches on a transistor in which a diffusion region of a different conductivity type from that of the base region is formed at the contact of the base electrode, and to allow the base current to be controlled when a digital transistor is produced. A base electrode connection region 24 of an n+-type is provided to a p-type base region 12, and a zener voltage control diffusion region 25 of a p+-type is provided around the periphery of the base electrode connection region 24 so as to form a pn junction and undergo zener breakdown at the desired voltage. A resistor 26 composed of polysilicon is connected to the base electrode connection region 24 via a metal electrode 16a. As a result, this semiconductor device has a bipolar transistor in which a zener diode ZD and the resistor 26 are serially built into the base.
    Type: Application
    Filed: December 13, 2002
    Publication date: June 26, 2003
    Applicant: Rohm Co., Ltd.
    Inventor: Kazuhisa Sakamoto
  • Patent number: 6563194
    Abstract: A semiconductor device having: a base area of the first conduction type formed on a semiconductor substrate; an emitter area of the second conduction type formed in the base area; and a collector area of the second conduction type formed as joined to the base area. In the collector area, an impurity area of the first conduction type is formed as separated from the base area. A surface resistor is connected to a base electrode connected to the base area. The surface resistor is connected, at other position thereof, to the impurity area.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: May 13, 2003
    Assignee: Rohm Co., Ltd.
    Inventor: Kazuhisa Sakamoto