Patents by Inventor Matsuo Zama

Matsuo Zama 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: 7982579
    Abstract: The metal foil resistor having a metal foil resistive element 20 composed of a metal foil whereupon a resistance circuit pattern is formed. The metal foil resistor comprises: a package 10 which contains the metal foil resistive element 20 in an electrically insulated state so that the resistive element can be expandable and contractible in a spreading direction of the metal foil; and a relay terminal 26 which is held in the package 10 in the electrically insulated state and is connected to an electrode 20a of the metal foil resistive element 20. A temperature coefficient of resistance can be reduced and stabilized. Control factors can be reduced to increase degrees in freedom in designing. Further, an external stress applied to a package is prevented from transmitting to the metal foil resistive element, and therefore the package can be easily attached to a discretionary heat sink.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: July 19, 2011
    Assignee: Alpha Electronics Corporation
    Inventors: Matsuo Zama, Toru Okamoto
  • Publication number: 20090267726
    Abstract: The metal foil resistor having a metal foil resistive element 20 composed of a metal foil whereupon a resistance circuit pattern is formed. The metal foil resistor comprises: a package 10 which contains the metal foil resistive element 20 in an electrically insulated state so that the resistive element can be expandable and contractible in a spreading direction of the metal foil; and a relay terminal 26 which is held in the package 10 in the electrically insulated state and is connected to an electrode 20a of the metal foil resistive element 20. A temperature coefficient of resistance can be reduced and stabilized. Control factors can be reduced to increase degrees in freedom in designing. Further, an external stress applied to a package is prevented from transmitting to the metal foil resistive element, and therefore the package can be easily attached to a discretionary heat sink.
    Type: Application
    Filed: October 2, 2006
    Publication date: October 29, 2009
    Applicant: Alpha Electronics Corporation
    Inventors: Matsuo Zama, Toru Okamoto
  • Patent number: 6684487
    Abstract: A load cell is constructed with several strain gauges. Each of the strain gauges are formed with a meandering conductive portion on a substrate or base member. Portions of the meandering conductive layer defines a predetermined tab ratio. The base member is formed with a predetermined amount of filler and the tab ratio is pre-determined such that the creep characteristic of the strain gauge is substantially zero in a load cell having a generally low rated load.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: February 3, 2004
    Assignee: Ishida Co.
    Inventors: Kazufumi Naito, Kenji Imai, Matsuo Zama, Naoki Sasaki
  • Publication number: 20020135454
    Abstract: A temperature sensor includes a temperature detection element, a band-like flexible printed wiring board, and a thin, elongated protection pipe. The temperature detection element has a temperature detection metal foil resistor. The temperature detection element is attached to a distal end of the flexible printed wiring board. The protection pipe accommodates the flexible printed wiring board and the temperature detection element.
    Type: Application
    Filed: March 21, 2002
    Publication date: September 26, 2002
    Inventors: Shunji Ichida, Tohru Okamoto, Matsuo Zama
  • Publication number: 20020083578
    Abstract: A load cell is constructed with several strain gauges. Each of the strain gauges are formed with a meandering conductive portion on a substrate or base member. Portions of the meandering conductive layer defines a predetermined tab ratio. The base member is formed with a predetermined amount of filler and the tab ratio is pre-determined such that the creep characteristic of the strain gauge is substantially zero in a load cell having a generally low rated load.
    Type: Application
    Filed: October 12, 2001
    Publication date: July 4, 2002
    Inventors: Kazufumi Naito, Kenji Imai, Matsuo Zama, Naoki Sasaki