Patents by Inventor Yasuhisa Tsukada

Yasuhisa Tsukada 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: 8632366
    Abstract: This invention provides a socket for a circuit board that adds function of electrical resistive element to a contact. A socket includes a socket body extending at a longitudinal direction; and a plurality of contacts disposed in two lines along the longitudinal direction of the socket body. When a memory module is connected to the socket body, terminals formed on opposite surfaces of the memory module are electrically and elastically connected by the contacts. The contact includes a contact portion which contacts the terminal, a bent portion for generating an elastic force, and a base portion. The contact is made of a conductive metal having elastic properties, and the contact used for carrying signal is provided with a resistor of an electrical resistive material that is different from the conductive metal. The resistor is connected in a current path between the base portion and the terminal of the memory module.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: January 21, 2014
    Assignee: Sensata Technologies Massachusetts, Inc.
    Inventors: Hideki Sano, Hiroyuki Abe, Yasushi Ishikawa, Toyokazu Ezura, Yasuhisa Tsukada
  • Publication number: 20120252233
    Abstract: This invention provides a socket for a circuit board that adds function of electrical resistive element to a contact. A socket includes a socket body extending at a longitudinal direction; and a plurality of contacts disposed in two lines along the longitudinal direction of the socket body. When a memory module is connected to the socket body, terminals formed on opposite surfaces of the memory module are electrically and elastically connected by the contacts. The contact includes a contact portion which contacts the terminal, a bent portion for generating an elastic force, and a base portion. The contact is made of a conductive metal having elastic properties, and the contact used for carrying signal is provided with a resistor of an electrical resistive material that is different from the conductive metal. The resistor is connected in a current path between the base portion and the terminal of the memory module.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 4, 2012
    Inventors: Hideki Sano, Hiroyuki Abe, Yasushi Ishikawa, Toyokazu Ezura, Yasuhisa Tsukada