Patents by Inventor Yasuhiro Seya

Yasuhiro Seya 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).

  • Multi-directional input key and key input device
    Patent number: 7053885
    Abstract: Disclosed are a multi-directional input key and a key input device helping to suppress erroneous input through the input key and providing a satisfactory operability. The multi-directional input key has an operation portion, on which are formed rectifying protrusions adapted to come into contact with the circuit board before the board contacts are brought into conduction upon tilting the operation portion to thereby rectify the tilting attitude of the operation portion toward the normal tilting direction. Even when the key top is tilted in an oblique direction deviated from the normal tilting direction, the rectifying protrusions come into contact with the upper surface of the printed circuit board before the board contacts are brought into conduction to thereby rectify the tilting direction of the key top to the normal tilting direction.
    Type: Grant
    Filed: May 12, 2003
    Date of Patent: May 30, 2006
    Assignee: Polymatech Co., Ltd.
    Inventor: Yasuhiro Seya
  • Multi-directional input key and key input device
    Publication number: 20030210234
    Abstract: Disclosed are a multi-directional input key and a key input device helping to suppress erroneous input through the input key and providing a satisfactory operability. The multi-directional input key has an operation portion, on which are formed rectifying protrusions adapted to come into contact with the circuit board before the board contacts are brought into conduction upon tilting the operation portion to thereby rectify the tilting attitude of the operation portion toward the normal tilting direction. Even when the key top is tilted in an oblique direction deviated from the normal tilting direction, the rectifying protrusions come into contact with the upper surface of the printed circuit board before the board contacts are brought into conduction to thereby rectify the tilting direction of the key top to the normal tilting direction.
    Type: Application
    Filed: May 12, 2003
    Publication date: November 13, 2003
    Inventor: Yasuhiro Seya