Patents by Inventor Masashi Ooi

Masashi Ooi 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: 7733251
    Abstract: A reference voltage generating unit generates a plurality of analog reference voltages, and an A/D converting unit converts the analog reference voltages thus generated and an analog input voltage input from an external device to digital reference values. A CPU generates, based on the analog reference voltages and the digital reference values converted from the analog reference voltages, an equation for correcting the analog input voltage to be converted to a digital value falling in a range of the digital reference values. With the equation generated, the CPU calculates the analog input voltage for the digital value obtained by conversion.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: June 8, 2010
    Assignee: Ricoh Company, Limited
    Inventor: Masashi Ooi
  • Publication number: 20090073019
    Abstract: A reference voltage generating unit generates a plurality of analog reference voltages, and an A/D converting unit converts the analog reference voltages thus generated and an analog input voltage input from an external device to digital reference values. A CPU generates, based on the analog reference voltages and the digital reference values converted from the analog reference voltages, an equation for correcting the analog input voltage to be converted to a digital value falling in a range of the digital reference values. With the equation generated, the CPU calculates the analog input voltage for the digital value obtained by conversion.
    Type: Application
    Filed: September 12, 2008
    Publication date: March 19, 2009
    Inventor: Masashi Ooi
  • Patent number: 7122767
    Abstract: A fixing roller in an image forming apparatus (such as a copier) has a fixing heater that is supplied power from a capacitor. The fixing heater, the capacitor, a mechanical switch (such as a relay) and a semiconductor switch (such as a FET) are serially connected. As a cover of the apparatus is opened, an interlock switch is turned on and outputs an off-signal to a CPU, which turns off the semiconductor switch prior to turning off the mechanical switch, and thereby prevents a counter-electromotive voltage due to an inrush current.
    Type: Grant
    Filed: February 3, 2005
    Date of Patent: October 17, 2006
    Assignee: Ricoh Company, Limited
    Inventors: Naoki Sato, Keiichi Sugai, Masae Sugawara, Masashi Ooi
  • Patent number: 7063576
    Abstract: Each terminal (3) of a bulb socket (1) has a power-supplying tab (31) and a bulb connecting portion (32) that are integral with one another. The bulb connecting portion (32) is on an extension of the power-supplying tab (31) extending along an inserting direction into a connector accommodating portion (25). Thus, the bulb socket (1) is reduced in height, the number of assembling steps is reduced, and the deformation of the terminals can be avoided. Further, a reduction in the number of parts leads to reduced production costs.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: June 20, 2006
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Masashi Ooi, Masaki Okamoto
  • Publication number: 20050167420
    Abstract: A fixing roller in an image forming apparatus (such as a copier) has a fixing heater that is supplied power from a capacitor. The fixing heater, the capacitor, a mechanical switch (such as a relay) and a semiconductor switch (such as a FET) are serially connected. As a cover of the apparatus is opened, an interlock switch is turned on and outputs an off-signal to a CPU, which turns off the semiconductor switch prior to turning off the mechanical switch, and thereby prevents a counter-electromotive voltage due to an inrush current.
    Type: Application
    Filed: February 3, 2005
    Publication date: August 4, 2005
    Inventors: Naoki Sato, Keiichi Sugai, Masae Sugawara, Masashi Ooi
  • Publication number: 20050112925
    Abstract: Each terminal (3) of a bulb socket (1) has a power-supplying tab (31) and a bulb connecting portion (32) that are integral with one another. The bulb connecting portion (32) is on an extension of the power-supplying tab (31) extending along an inserting direction into a connector accommodating portion (25). Thus, the bulb socket (1) is reduced in height, the number of assembling steps is reduced, and the deformation of the terminals can be avoided. Further, a reduction in the number of parts leads to reduced production costs.
    Type: Application
    Filed: November 18, 2004
    Publication date: May 26, 2005
    Applicant: Sumitomo Wiring System, Ltd.
    Inventors: Masashi Ooi, Masaki Okamoto
  • Patent number: 6814581
    Abstract: A connection body (41), of a connector for a towing vehicle, to be connected to a wire harness of a to-be-towed object and a connection body (42) of the connector to be connected to a wire harness of a towing vehicle body are approximately cylindrical. Terminals (32, 33) inside the connection bodies (41, 42) are composed of a common metal piece (31). The connector is connected to a wire harness (35) of the towing vehicle body not by using an exclusive cylindrical connector but by directly connecting a core wire to the terminal (32). To prevent water from penetrating into the connector, an O-ring (38), a sealing medium (57), and a rubber plug (59) are mounted on the connector. A protector (37) is installed on an insertion portion of the wire harness (35) of the towing vehicle body into the housing (30).
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: November 9, 2004
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Yoshiyuki Matsuo, Masashi Ooi, Yukihisa Nakagawa, Kazuhiro Aoki
  • Publication number: 20040053525
    Abstract: A connection body (41), of a connector for a towing vehicle, to be connected to a wire harness of a to-be-towed object and a connection body (42) of the connector to be connected to a wire harness of a towing vehicle body are approximately cylindrical. Terminals (32, 33) inside the connection bodies (41, 42) are composed of a common metal piece (31). The connector is connected to a wire harness (35) of the towing vehicle body not by using an exclusive cylindrical connector but by directly connecting a core wire to the terminal (32). To prevent water from penetrating into the connector, an O-ring (38), a sealing medium (57), and a rubber plug (59) are mounted on the connector. A protector (37) is installed on an insertion portion of the wire harness (35) of the towing vehicle body into the housing (30).
    Type: Application
    Filed: June 30, 2003
    Publication date: March 18, 2004
    Applicant: Sumitomo Wiring Systems, Ltd.
    Inventors: Yoshiyuki Matsuo, Masashi Ooi, Yukihisa Nakagawa, Kazuhiro Aoki
  • Patent number: 5972052
    Abstract: A fabrication method of a solid electrolytic capacitor is provided, which is able to form the surface irregularity of a conductive polymer layer serving as a solid electrolyte with good controllability and good stability. A capacitor body is formed by a valve metal. The body serves as an anode of the capacity. An oxide layer is formed to cover the surface of the capacitor body. The oxide layer serves as a dielectric of the capacitor. A first conductive polymer layer is formed on the oxide layer. The first conductive polymer layer serves as a part of a solid electrolyte of the capacitor. A powder of a conductive polymer is deposited on the first conductive polymer layer by spraying a fluid containing the powder on the first conductive polymer. A second conductive polymer layer is formed on the first conductive polymer layer to cover the deposited powder. The surface of the second conductive polymer layer has irregularities corresponding to the deposited powder.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: October 26, 1999
    Assignee: NEC Corporation
    Inventors: Atsushi Kobayashi, Takashi Fukaumi, Tomohide Date, Masashi Ooi