Patents by Inventor Hiroshi Saitoh

Hiroshi Saitoh 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).

  • Patent number: 7192808
    Abstract: A semiconductor device is produced using a lead frame whose size is smaller than a prescribed center area of a semiconductor chip surrounded by its bonding pads, which are connected with electrodes supported by electrode supports and interconnected with outer frames and an intermediate frame of the lead frame via bonding wires. A series of projections and hollows are formed on the outer frames, wherein the electrode supports are interconnected with the hollows of the outer frames respectively. The semiconductor chip combined with the lead frame, is integrally enclosed in a resin under the condition where only the electrode surfaces are exposed to the exterior, thus forming a resin package. Then, the electrode supports locating the electrodes are cut out and partially removed, so that the electrodes are made electrically independent from each other.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: March 20, 2007
    Assignee: Yamaha Corporation
    Inventor: Hiroshi Saitoh
  • Patent number: 7187063
    Abstract: A magnetic sensor is constituted using magnetic sensor chips mounted on stages supported by interconnecting members and a frame having leads in a lead frame. Herein, the stages are inclined upon plastic deformation of the interconnecting members. When the frame is held in a metal mold and the stages are pressed, the interconnecting members are elastically deformed, so that the magnetic sensor chips are bonded onto the stages placed substantially in the same plane and are then wired with the leads. Thereafter, the stages are released from pressure, so that the interconnecting members are restored from the elastically deformed states thereof. When the magnetic sensor chips are combined together to realize three sensing directions, it is possible to accurately measure three-dimensional bearings of magnetism, and the magnetic sensor can be reduced in dimensions and manufactured with a reduced cost therefor.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: March 6, 2007
    Assignee: Yamaha Corporation
    Inventors: Hiroshi Adachi, Hiroshi Saitoh, Kenichi Shirasaka, Hideki Sato, Masayoshi Omura
  • Patent number: 7184678
    Abstract: An image forming apparatus in which a visible image is transferred to a transfer material includes a pre-transfer exposing unit that makes only a portion of a latent image carrier that corresponds to a leading edge of the transfer material expose, and a transfer-bias applying unit that applies a bias for transferring the visible image. The transfer-bias applying unit starts applying the bias to the transfer material, at least step-by-step, when a predetermined time is passed from a point of time at which the leading edge of the transfer material comes into a contact with the latent image carrier by controlling the pre-transfer exposing unit and a bias applying timing of the transfer-bias applying unit.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: February 27, 2007
    Assignee: Ricoh Company, Limited
    Inventors: Hirokazu Ishii, Satoshi Takano, Hiroshi Saitoh, Ryoh Tanoue, Itaru Matsuda, Yuji Suzuki, Eiji Shimojo, Noboru Onodera, Hidenori Nihei
  • Publication number: 20070028685
    Abstract: A physical quantity sensor includes a pair of physical quantity sensor chips that are inclined with respect to the bottom of an exterior mold package whose side surfaces are each inclined in a thickness direction by an angle ranging from 0° to 5° and are formed in proximity to the outer ends of the physical quantity sensor chips. It is possible to realize the inclination of stages without using molds, wherein absorption devices are used to absorb prescribed portions related to stages, which rotate about axial lines and are thus inclined with respect to a prescribed base. In manufacturing, a thin metal plate having a plurality of lead frames is placed on a base delimited by a clamp; then, intersecting points of intermediate portions formed between the lead frames are subjected to pressing so as to realize the inclination of stages.
    Type: Application
    Filed: October 5, 2006
    Publication date: February 8, 2007
    Applicant: YAMAHA CORPORATION
    Inventors: Kenichi Shirasaka, Hiroshi Saitoh
  • Patent number: 7171956
    Abstract: The present invention provides an EGR cooler that is easy to manufacture and can accelerate heat exchange. Round in section tubes are plastically deformed in one plane crossing centerlines thereof such that corrugated exhaust gas flow paths are formed inside the tubes.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: February 6, 2007
    Assignee: T. Rad Co., Ltd.
    Inventors: Takazi Igami, Toshimichi Kobayashi, Jyohei Yamamoto, Hiroshi Saitoh
  • Publication number: 20070027892
    Abstract: An object of the present invention is to reduce a possibility of existence of a plurality of identical file names in files which are created by a plurality of apparatuses. A file name generation apparatus according to the present invention includes: an UMID generation unit (12) which generates a globally unique identifier; and a file name generation unit (14) which generates a file name which includes the globally unique identifier generated by the UMID generation unit (12).
    Type: Application
    Filed: March 2, 2005
    Publication date: February 1, 2007
    Inventors: Katsuyuki Sakaniwa, Toshihiro Tanaka, Hiroshi Saitoh, Hideki Ootaka, Norikatsu Yoshida, Hisataka Ueda, Nobukatsu Okuda
  • Patent number: 7170149
    Abstract: A semiconductor package encapsulating a semiconductor chip provides inner leads and outer leads for establishing electrical connections with the substrate. Herein, a lead frame is set into the metal mold, into which a resin is injected and which is clamped in proximity to the outer leads. Thus, the semiconductor package is sealed so as to avoid unwanted formation of resin burrs around lower surfaces of the inner leads. In addition, a semiconductor device is produced using a package in which a semiconductor chip mounted on a stage and terminals are embedded within a resin. Each terminal provides an electrode surface, an interconnecting portion, and an exposed terminal surface. Herein, an isolation portion is formed as an integral part of the package made by the resin and is arranged in the prescribed area between the electrode surface and the exposed terminal surface.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: January 30, 2007
    Assignee: Yamaha Corporation
    Inventors: Kenichi Shirasaka, Hiroshi Saitoh
  • Publication number: 20070001275
    Abstract: A semiconductor package encapsulating a semiconductor chip provides inner leads and outer leads for establishing electrical connections with the substrate. Herein, a lead frame is set into the metal mold, into which a resin is injected and which is clamped in proximity to the outer leads. Thus, the semiconductor package is sealed so as to avoid unwanted formation of resin burrs around lower surfaces of the inner leads. In addition, a semiconductor device is produced using a package in which a semiconductor chip mounted on a stage and terminals are embedded within a resin. Each terminal provides an electrode surface, an interconnecting portion, and an exposed terminal surface. Herein, an isolation portion is formed as an integral part of the package made by the resin and is arranged in the prescribed area between the electrode surface and the exposed terminal surface.
    Type: Application
    Filed: September 7, 2006
    Publication date: January 4, 2007
    Applicant: YAMAHA CORPORATION
    Inventors: Kenichi Shirasaka, Hiroshi Saitoh
  • Publication number: 20060293375
    Abstract: Various crystal forms of 4-(1-((4-methylbenzothiophen-3-yl)methyl)benzimidazol-2-ylthio)butanoic acid from a solvent, and a process for production thereof are provided.
    Type: Application
    Filed: May 14, 2004
    Publication date: December 28, 2006
    Inventors: Mitsuru Teramoto, Naoki Tsuchiya, Hiroshi Saitoh
  • Publication number: 20060244149
    Abstract: A semiconductor device production method which includes steps of: preparing a wafer on which multiple integrated circuits are formed on a principal face; forming a rewiring which is electrically connected to the integrated circuits via a pad electrode; and dicing the wafer after forming an electrode terminal on the rewiring, including steps of: forming a first resin layer by sealing at least the rewiring and the electrode terminal formed on the principal face of the wafer with a first resin; processing a first dicing from a back face of the wafer to the principal face of the wafer or halfway to the first resin layer when the first resin layer is formed; forming a second resin layer by sealing a cut line outlined upon the first dicing and the back face of the wafer continuously with a first resin; and processing a second dicing while leaving the second resin layer which covers a side face outlined upon the first dicing.
    Type: Application
    Filed: March 15, 2006
    Publication date: November 2, 2006
    Inventors: Taketoshi Nakamura, Hiroshi Saitoh
  • Publication number: 20060220193
    Abstract: A magnetic sensor is constituted using magnetic sensor chips mounted on stages supported by interconnecting members and a frame having leads in a lead frame. Herein, the stages are inclined upon plastic deformation of the interconnecting members. When the frame is held in a metal mold and the stages are pressed, the interconnecting members are elastically deformed, so that the magnetic sensor chips are bonded onto the stages placed substantially in the same plane and are then wired with the leads. Thereafter, the stages are released from pressure, so that the interconnecting members are restored from the elastically deformed states thereof. When the magnetic sensor chips are combined together to realize three sensing directions, it is possible to accurately measure three-dimensional bearings of magnetism, and the magnetic sensor can be reduced in dimensions and manufactured with a reduced cost therefor.
    Type: Application
    Filed: May 5, 2006
    Publication date: October 5, 2006
    Inventors: Hiroshi Adachi, Hiroshi Saitoh, Kenichi Shirasaka, Hideki Sato, Masayoshi Omura
  • Publication number: 20060211176
    Abstract: A physical quantity sensor is produced using a lead frame having at least one stage for mounting a physical quantity sensor chip and a frame having leads, wherein the physical quantity sensor chip is inclined with respect to the frame. A bonding device performs wire bonding so as to electrically connect the physical quantity sensor chip and leads, which are respectively located perpendicular to a capillary for discharging wires. The bonding device includes a wedge tool having a first planar surface for holding one ends of wires with leads and a second planar surface for holding the other ends of wires with the physical quantity sensor chip. The lead frame includes interconnection leads, having shape memory alloys, for interconnecting the stage and frame together. The physical quantity sensor chip can be mounted on the stage via an inclination member having a wedge shape.
    Type: Application
    Filed: March 7, 2006
    Publication date: September 21, 2006
    Applicant: Shiga International
    Inventors: Kenichi Shirasaka, Hiroshi Saitoh
  • Publication number: 20060185452
    Abstract: A lead frame includes a frame body defining an internal region; a plurality of leads extending from the frame body; a first stage disposed in the internal region; and a first modified connection lead structure comprising a flexible portion connected to the first stage and a modified connection lead connecting the flexible portion to the frame body. The modified connection lead has sloped side walls that permit a molten resin to flow into and fill up a small gap around the modified connection lead to form a void-free resin mold that encapsulates a sensor chip included in a sensor.
    Type: Application
    Filed: February 17, 2006
    Publication date: August 24, 2006
    Inventors: Kenichi Shirasaka, Hiroshi Saitoh
  • Publication number: 20060186529
    Abstract: A lead frame includes a frame body defining an internal region, a plurality of leads extending from the frame body, and first and second stages that are disposed in the internal region. The first and second stages are sloped and are parallel to a first line along which a primary stream of a molten resin runs, so that slope angles of the stages are not substantially changed by the injection of the molten resin into the cavity.
    Type: Application
    Filed: February 16, 2006
    Publication date: August 24, 2006
    Inventors: Kenichi Shirasaka, Hiroshi Saitoh
  • Publication number: 20060130818
    Abstract: The present invention provides an EGR cooler that is easy to manufacture and can accelerate heat exchange. Round in section tubes are plastically deformed in one plane crossing centerlines thereof such that corrugated exhaust gas flow paths are formed inside the tubes.
    Type: Application
    Filed: July 31, 2003
    Publication date: June 22, 2006
    Inventors: Takazi Igami, Toshimichi Kobayashi, jyohei Yamamoto, Hiroshi Saitoh
  • Publication number: 20060087006
    Abstract: A physical quantity sensor includes a pair of physical quantity sensor chips that are inclined with respect to the bottom of an exterior mold package whose side surfaces are each inclined in a thickness direction by an angle ranging from 0° to 5° and are formed in proximity to the outer ends of the physical quantity sensor chips. It is possible to realize the inclination of stages without using molds, wherein absorption devices are used to absorb prescribed portions related to stages, which rotate about axial lines and are thus inclined with respect to a prescribed base. In manufacturing, a thin metal plate having a plurality of lead frames is placed on a base delimited by a clamp; then, intersecting points of intermediate portions formed between the lead frames are subjected to pressing so as to realize the inclination of stages.
    Type: Application
    Filed: October 6, 2005
    Publication date: April 27, 2006
    Inventors: Kenichi Shirasaka, Hiroshi Saitoh
  • Publication number: 20060012025
    Abstract: A semiconductor device is produced using a lead frame whose size is smaller than a prescribed center area of a semiconductor chip surrounded by its bonding pads, which are connected with electrodes supported by electrode supports and interconnected with outer frames and an intermediate frame of the lead frame via bonding wires. A series of projections and hollows are formed on the outer frames, wherein the electrode supports are interconnected with the hollows of the outer frames respectively. The semiconductor chip combined with the lead frame is integrally enclosed in a resin under the condition where only the electrode surfaces are exposed to the exterior, thus forming a resin package. Then, the electrode supports locating the electrodes are cut out and partially removed, so that the electrodes are made electrically independent from each other.
    Type: Application
    Filed: September 20, 2005
    Publication date: January 19, 2006
    Inventor: Hiroshi Saitoh
  • Publication number: 20060006863
    Abstract: A magnetic sensor is constituted using magnetic sensor chips mounted on stages supported by interconnecting members and a frame having leads in a lead frame. Herein, the stages are inclined upon plastic deformation of the interconnecting members. When the frame is held in a metal mold and the stages are pressed, the interconnecting members are elastically deformed, so that the magnetic sensor chips are bonded onto the stages placed substantially in the same plane and are then wired with the leads. Thereafter, the stages are released from pressure, so that the interconnecting members are restored from the elastically deformed states thereof. When the magnetic sensor chips are combined together to realize three sensing directions, it is possible to accurately measure three-dimensional bearings of magnetism, and the magnetic sensor can be reduced in dimensions and manufactured with a reduced cost thereof.
    Type: Application
    Filed: August 31, 2005
    Publication date: January 12, 2006
    Applicant: Yamaha Corporation
    Inventors: Hiroshi Adachi, Hiroshi Saitoh, Kenichi Shirasaka, Hideki Sato, Masayoshi Omura
  • Publication number: 20050262372
    Abstract: The present invention aims to be capable of properly measuring the cycle of an external signal even where a timer clock and a CPU clock are operated asynchronously.
    Type: Application
    Filed: March 22, 2005
    Publication date: November 24, 2005
    Applicant: Oki Electric Co., Ltd.
    Inventor: Hiroshi Saitoh
  • Patent number: 6961535
    Abstract: An image forming apparatus including a cleaning device for removing toner, paper dust and other impurities left on an image carrier after image transfer with a cleaning member is disclosed. The cleaning member contacts the surface of the image carrier with variable pressure and remains, about the time when the image carrier stops moving after image formation, in contact with the surface with pressure lower than pressure capable of scrapping off the impurities. Before movement for image formation, the image carrier is driven in a reverse direction opposite to a forward direction assigned to image formation, stopped, and again moved in the forward direction and then in the reverse direction at least one time.
    Type: Grant
    Filed: October 19, 2004
    Date of Patent: November 1, 2005
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinichi Kawahara, Satoshi Takano, Toshihiro Sugiyama, Hiroshi Saitoh, Hirokazu Ishii, Yuji Arai, Shigeru Yoshiki