Patents by Inventor Koji Ishikawa

Koji Ishikawa 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: 7740822
    Abstract: The objective of the present invention is to provide a method for obtaining a high purity disilicon hexachloride by removing a silanol with good efficiency from a disilicon hexachloride material containing the silanol as an impurity. The purification method for disilicon hexachloride of the present invention comprises a process for contacting a disilicon hexachloride material containing disilicon hexachloride and a silanol as an impurity with an adsorbent material such as activated carbon to remove the silanol. The method may further comprise a distillation process. The above processes are preferably performed in an atmosphere of an inert gas.
    Type: Grant
    Filed: March 17, 2006
    Date of Patent: June 22, 2010
    Assignee: Toagosei Co., Ltd.
    Inventors: Koji Ishikawa, Hiroshi Suzuki, Yoshinori Kimata
  • Publication number: 20100126760
    Abstract: A print circuit board includes a first layer on which a land is formed, a second layer on which an analog signal pattern and a first ground pattern are wired, a third layer on which a digital signal pattern and a second ground pattern are wired, and a fourth layer on which a third ground pattern is wired. The digital signal pattern is vertically sandwiched between the first ground pattern and the third ground pattern. The analog signal pattern and digital signal pattern are arranged without overlapping each other on the projection plane. The analog signal pattern and second ground pattern are arranged so as to overlap each other.
    Type: Application
    Filed: June 27, 2008
    Publication date: May 27, 2010
    Applicant: Canon Kabushiki Kaisha
    Inventor: Koji Ishikawa
  • Patent number: 7637783
    Abstract: A connector is disclosed that includes a housing having a space into which an object to be connected is inserted and a contact member incorporated in the housing. The contact member includes a first contact part and a second contact part. The first and second contact parts are aligned to come into contact with the pad of the object to be connected. The first contact part is positioned closer to the entrance of the space than the second contact part is. The first contact part and the second contact part face the space. The contact member includes a main body part, a first contact arm part having the first contact part, and a second contact arm part having the second contact part. The first contact arm part and the second contact arm part extend from first and second separate portions, respectively, of the main body part.
    Type: Grant
    Filed: August 4, 2008
    Date of Patent: December 29, 2009
    Assignees: Fujitsu Component Limited, Fujitsu Limited
    Inventors: Chiharu Sasaoka, Hideo Miyazawa, Mitsuru Kobayashi, Koki Sato, Akira Tamura, Koji Ishikawa, Yasushi Masuda
  • Patent number: 7629669
    Abstract: A semiconductor apparatus includes a first transistor having a first emitter electrode, a first base electrode, and a first collector electrode in a region over a first region. Base lead-out polysilicon connecting the first base electrode and a first base region passes over a second region provided out of the first region and a resistor element is added. A writing voltage is reduced in an antifuse using two bipolar transistors.
    Type: Grant
    Filed: April 26, 2006
    Date of Patent: December 8, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Koji Ishikawa, Kazutaka Mori, Hiroshige Kogayu, Tamotsu Miyake, Mitsugu Kusunoki
  • Publication number: 20090298307
    Abstract: A conductive contact unit includes plate-like conductive contacts for electrically connecting different circuitries. Each conductive contact includes a first contacting element to be brought in physical contact with one circuitry, a second contacting element to be brought in physical contact with another circuitry, an elastic element between the first contacting element and the second contacting element, a first connecting element that connects the elastic element and the first contacting element, and a second connecting element that connects the elastic element and the second contacting element and that has an opening. The conductive contact unit also includes a conductive contact holder including first guiding grooves and second guiding grooves facing the first guiding grooves. The conductive contact holder holds the conductive contacts with both longitudinal outside ends of each conductive contact being slidably engaged with the first and the second guiding grooves.
    Type: Application
    Filed: November 21, 2006
    Publication date: December 3, 2009
    Applicant: NHK Spring Co., Ltd.
    Inventors: Taiichi Rikimaru, Koji Ishikawa, Jun Tominaga
  • Patent number: 7612333
    Abstract: A photoelectric conversion element package retaining unit includes a photoelectric conversion element package having electrodes formed on a rear surface of a light-receiving surface, a printed circuit board electrically connected to the electrodes, and a retaining member configured to retain the photoelectric conversion element package. The printed circuit board includes a first opening formed in an area corresponding to an inside of the electrodes. The retaining member includes a positioning unit configured to position the photoelectric conversion element package in an axial direction orthogonal to the light-receiving surface by abutting on the photoelectric conversion element package outside the electrodes, and a second opening formed to pour an adhesive into the area corresponding to the inside of the electrodes.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: November 3, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventor: Koji Ishikawa
  • Publication number: 20090233493
    Abstract: A conductive contact unit establishes an electrical connection between different circuitries, and includes a plurality of conductive contacts that receive and output an electrical signal from and to the circuitries, respectively. The conductive contact unit includes a conductive contact holder that accommodates and holds the conductive contacts, and a vibration applying unit that applies vibration to the conductive contact holder.
    Type: Application
    Filed: March 1, 2007
    Publication date: September 17, 2009
    Applicant: NHK SPRING CO. LTD
    Inventors: Jun Tominaga, Koji Ishikawa, Taiichi Rikimaru
  • Publication number: 20090209142
    Abstract: A connector is disclosed that includes a housing having a space into which an object to be connected is inserted and a contact member incorporated in the housing. The contact member includes a first contact part and a second contact part. The first and second contact parts are aligned to come into contact with the pad of the object to be connected. The first contact part is positioned closer to the entrance of the space than the second contact part is. The first contact part and the second contact part face the space. The contact member includes a main body part, a first contact arm part having the first contact part, and a second contact arm part having the second contact part. The first contact arm part and the second contact arm part extend from first and second separate portions, respectively, of the main body part.
    Type: Application
    Filed: August 4, 2008
    Publication date: August 20, 2009
    Inventors: Chiharu Sasaoka, Hideo Miyazawa, Mitsuru Kobayashi, Koki Sato, Akira Tamura, Koji Ishikawa, Yasushi Masuda
  • Publication number: 20090153161
    Abstract: A probe holder is for containing a plurality of probes for inputting and outputting an electrical signal to and from a circuitry when the probes come in contact with the circuitry. The probe holder includes a distal end for holding the probes; a proximal end that supports the distal end; and a flexure-causing unit between the distal end and the proximal end to cause a flexure of the distal end relative to the proximal end.
    Type: Application
    Filed: November 21, 2006
    Publication date: June 18, 2009
    Inventors: Koji Ishikawa, Jun Tominaga, Taiichi Rikimaru
  • Publication number: 20090146051
    Abstract: A photoelectric conversion element unit for use in an imaging apparatus including a photoelectric conversion element package containing a photoelectric conversion element, a wiring substrate where the photoelectric conversion element package is mounted on the first surface and an electronic component related to the photoelectric conversion element is mounted on a rear side of the first surface, and a support board attached to an attachment point in the imaging apparatus where the photoelectric conversion element package is fixed, wherein an opening smaller than an external form of the photoelectric conversion element package is formed in the support board, and the electronic component mounted on the wiring substrate is provided within the opening.
    Type: Application
    Filed: December 9, 2008
    Publication date: June 11, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Koji Ishikawa
  • Publication number: 20090104100
    Abstract: Hexachlorodisilane is decomposed into hydrochloric acid, silicon dioxide and water by introducing hexachlorodisilane-containing flue gas into a reaction region without moistening the flue gas and by supplying oxygen-containing gas that also contains a small amount of moisture to the reaction region maintained at a temperature at which hexachlorodisilane decomposes.
    Type: Application
    Filed: February 6, 2007
    Publication date: April 23, 2009
    Inventors: Hiroshi Imamura, Hiroaki Takeuchi, Koji Ishikawa, Hiroshi Suzuki, Akira Moriya, Katsuyoshi Harada
  • Publication number: 20090053124
    Abstract: The objective of the present invention is to provide a method for obtaining a high purity disilicon hexachloride by removing a silanol with good efficiency from a disilicon hexachloride material containing the silanol as an impurity. The purification method for disilicon hexachloride of the present invention comprises a process for contacting a disilicon hexachloride material containing disilicon hexachloride and a silanol as an impurity with an adsorbent material such as activated carbon to remove the silanol. The method may further comprise a distillation process. The above processes are preferably performed in an atmosphere of an inert gas.
    Type: Application
    Filed: March 17, 2006
    Publication date: February 26, 2009
    Applicant: TOAGOSEI CO., LTD.
    Inventors: Koji Ishikawa, HIroshi Suzuki, Toshinori Kimata
  • Publication number: 20090050795
    Abstract: A photoelectric conversion element package retaining unit includes a photoelectric conversion element package having electrodes formed on a rear surface of a light-receiving surface, a printed circuit board electrically connected to the electrodes, and a retaining member configured to retain the photoelectric conversion element package. The printed circuit board includes a first opening formed in an area corresponding to an inside of the electrodes. The retaining member includes a positioning unit configured to position the photoelectric conversion element package in an axial direction orthogonal to the light-receiving surface by abutting on the photoelectric conversion element package outside the electrodes, and a second opening formed to pour an adhesive into the area corresponding to the inside of the electrodes.
    Type: Application
    Filed: August 22, 2008
    Publication date: February 26, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Koji Ishikawa
  • Publication number: 20090054568
    Abstract: The objective of the present invention is to provide a thermoplastic resin composition excelling in translucency, impact resistance, heat resistance and fluidity, particularly a thermoplastic resin composition that in the production of thermoplastic resin molded items through extrusion processing, molding processing, etc., permits a wide tolerance range of processing conditions, such as low susceptibility to quality deterioration by thermal history, excelling in translucency, impact resistance, heat resistance and fluidity; and a molding thereof. The present composition comprises a rubber-reinforced resin consisting of a rubber-reinforced copolymeric resin obtained by polymerization of a vinyl-based monomer including an aromatic vinyl compound in the presence of a rubbery polymer having refractive index in the range from 1.520-1.
    Type: Application
    Filed: April 14, 2006
    Publication date: February 26, 2009
    Applicant: TECHNO POLYMER CO., LTD.
    Inventors: Toshifumi Uejima, Koji Ishikawa, Toshiyuki Higashijima, Shigeki Sugino
  • Patent number: 7487609
    Abstract: To permit smooth performance of both of an operation requiring a high pressure and an operation desired to produce a pressure at a suppressed level, a shuttle block positioned between pilot operating units and flow control valves and pump regulators is arranged in association with shuttle valves, which select maximum pressures of groups of operation signal pressures produced by the pilot operating units, respectively, and at least one of the plural groups of operation signals, and is constructed to include hydraulic selector valves and a boom-lowering, hydraulic selector valve that are operable in particular ways.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: February 10, 2009
    Assignee: Hitahi Construction Machinery Co., Ltd.
    Inventors: Tsuyoshi Nakamura, Tsukasa Toyooka, Koji Ishikawa, Masao Nishimura
  • Publication number: 20090026050
    Abstract: A conductive contact unit includes a conductive contact holder, a conductive contact, and an aligning unit. The conductive contact holder includes a first guiding grooves and a second guiding groove opposite to the first guiding groove, each slidably engaging one edge of the conductive contact. The conductive contact has a plate-like shape, and includes a first contacting element and a second contacting element that are brought into contact with different circuitries, a resilient element that is expandable and contractible in a longitudinal direction between the first contacting element and the second contacting element, a first connecting element that connects the resilient element and the first contacting element, and a second connecting element that connects the resilient element and the second contacting element. The aligning unit aligns the conductive contacts.
    Type: Application
    Filed: March 1, 2007
    Publication date: January 29, 2009
    Applicant: NHK Spring Co., Ltd.
    Inventors: Jun Tominaga, Koji Ishikawa, Taiichi Rikimaru
  • Patent number: 7445456
    Abstract: A highly reliable printed circuit board which is capable of preventing a short circuit between traces from being caused by a solder bridge formed by excess solder. The printed circuit board has a solder resist covering copper foil traces formed on a substrate and the substrate, for insulation. The solder resist is formed such that exposed portions of the substrate between adjacent ones of the conductive traces each have a shape protruding in a direction of where the other printed circuit board is connected, with respect to exposed portions of the adjacent ones of the conductive traces, in a boundary between the connection part and a portion on which an insulating layer is formed.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: November 4, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventor: Koji Ishikawa
  • Publication number: 20080188002
    Abstract: There is provided a method and apparatus for removing selenium oxide in a sample as well as a method and apparatus for measuring mercury in coal combustion exhaust gas by using the same. The apparatus for removing selenium oxide in a sample, comprising: (1) a heating introduction path for heating a sample, (2) a primary cooling unit having a flow path through which the heated sample flows countercurrently to cooling water, whereby the heated sample is mixed with, and cooled by, cooling water, (3) a secondary cooling unit having a spiral flow path for cooling the mixed gas and having a space for gas/liquid separation at the end of the spiral flow path, (4) a regenerator for introducing condensed water from the secondary cooling unit, and (5) a condensed water-cooling path for connecting the regenerator to the primary cooling unit.
    Type: Application
    Filed: February 1, 2008
    Publication date: August 7, 2008
    Inventors: Junji Kato, Shigeyuki Akiyama, Fujio Koga, Koji Ishikawa
  • Publication number: 20080102272
    Abstract: The present invention relates to a wrapping film comprising, as at least one surface layer, a resin composition (D) layer comprising 0.5 to 5 parts by weight of an ethylene-vinyl acetate copolymer having a vinyl acetate content of 30 to 60% by weight (B) and 5 to 40 parts by weight of a liquid additive (C) based on 100 parts by weight of an aliphatic polyester resin (A).
    Type: Application
    Filed: September 21, 2007
    Publication date: May 1, 2008
    Inventors: Yuichiro Sakamoto, Koji Ishikawa
  • Patent number: 7362933
    Abstract: In an optical branching unit according to the invention, the cross section shape in an area of a front stage to branch to two output waveguides in the optical branch is a rectangle or a non-circle with different vertical-to-horizontal ratio, including an area that the length along the surface of the substrate is defined to be shorter than the length in the direction orthogonal to the surface of a substrate, the cross section at the output ends of the output waveguide is a rectangle or a non-circle with a different vertical-to-horizontal ratio, where the length along the surface of the substrate is defined to be longer than the length in the direction orthogonal to the surface of the substrate.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: April 22, 2008
    Assignee: OMRON Corporation
    Inventors: Fumio Takahashi, Koji Ishikawa, Norihiro Tajima