Patents by Inventor Kazuhiro Idogawa

Kazuhiro Idogawa 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).

  • Circuit board and liquid ejection head
    Patent number: 9832864
    Abstract: A liquid ejection head includes a circuit board having a wire pattern divided into a plurality of portions in order to provide the circuit board with very reliable bonding.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: November 28, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichiro Iri, Ryo Sato, Kazuhiro Idogawa, Chiaki Muraoka, Hiromasa Amma, Takuya Iwano
  • CIRCUIT BOARD AND LIQUID EJECTION HEAD
    Publication number: 20160353565
    Abstract: A wire pattern is divided into a plurality of portions in order to provide a circuit board for which very reliably bonding can be achieved and a liquid ejection head including the circuit board.
    Type: Application
    Filed: May 23, 2016
    Publication date: December 1, 2016
    Inventors: Junichiro Iri, Ryo Sato, Kazuhiro Idogawa, Chiaki Muraoka, Hiromasa Amma, Takuya Iwano
  • Liquid discharging head and method for producing the same
    Patent number: 9463624
    Abstract: A liquid discharging head includes a recording element substrate configured to discharge a liquid; an electric wiring substrate that is provided with a lead terminal that is connected to the recording element substrate; and a supporting member to which the electric wiring substrate is bonded. The electric wiring substrate is bonded to the supporting member with two or more types of adhesives including at least a first adhesive and a second adhesive whose volume resistivity is higher than that of the first adhesive, a bond strength of the first adhesive is higher than a bond strength of the second adhesive, and, at the supporting member, the second adhesive is applied such that the second adhesive is provided closer to the lead terminal than the first adhesive.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: October 11, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Sayaka Seki, Naoko Tsujiuchi, Satoshi Kimura, Kiyomitsu Kudo, Kazuhiro Idogawa
  • LIQUID DISCHARGING HEAD AND METHOD FOR PRODUCING THE SAME
    Publication number: 20150343777
    Abstract: A liquid discharging head includes a recording element substrate configured to discharge a liquid; an electric wiring substrate that is provided with a lead terminal that is connected to the recording element substrate; and a supporting member to which the electric wiring substrate is bonded. The electric wiring substrate is bonded to the supporting member with two or more types of adhesives including at least a first adhesive and a second adhesive whose volume resistivity is higher than that of the first adhesive, a bond strength of the first adhesive is higher than a bond strength of the second adhesive, and, at the supporting member, the second adhesive is applied such that the second adhesive is provided closer to the lead terminal than the first adhesive.
    Type: Application
    Filed: May 27, 2015
    Publication date: December 3, 2015
    Inventors: Sayaka Seki, Naoko Tsujiuchi, Satoshi Kimura, Kiyomitsu Kudo, Kazuhiro Idogawa
  • FM demodulator with tracking filter
    Patent number: 5051703
    Abstract: An FM demodulating circuit using a tracking filter is disclosed, in which the operation of the tracking filter following the frequency of the signal inputted therein is made more precise by using the tracking filter and an oscillator driven by a same control signal.
    Type: Grant
    Filed: June 14, 1990
    Date of Patent: September 24, 1991
    Assignee: Clarion Co., Ltd.
    Inventors: Kazuhiro Idogawa, Kiyoshi Amazawa