Patents by Inventor Nobuyuki Kohama

Nobuyuki Kohama 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).

  • Film pressure sensitive resistor and pressure sensitive sensor
    Patent number: 6388556
    Abstract: A film pressure sensitive resistor comprises conductive particles such as carbon black, a binder such as polyester resin, and spherical elastic particles having an average particle diameter of 2 &mgr;m to 50 &mgr;m, and further has average surface roughness of 0.1 &mgr;m to 3 &mgr;m, a peak-to-peak concavo-convex period of 10 &mgr;m to 1000 &mgr;m, and an elastic modulus of 800 MPa to 8000 MPa so as to have reliable quality, and excellent environmental resistance, and durability to repeated use (depressing).
    Type: Grant
    Filed: September 5, 2001
    Date of Patent: May 14, 2002
    Assignee: Fujikura Ltd.
    Inventors: Takayuki Imai, Toshifumi Nakajima, Takahiro Ishii, Toshio Ochiai, Nobuyuki Kohama, Nobutada Hyakutake