Patents by Inventor Ken Yokoyama

Ken Yokoyama 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).

  • Fingerprint registering apparatus, fingerprint identifying apparatus, and fingerprint identifying method
    Patent number: 6233348
    Abstract: A feature point information calculating unit calculates the connection of a feature point extracted by a feature point extracting unit through a ridge. An identifying unit identifies the connection state of the feature point calculated by the feature point information calculating unit.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: May 15, 2001
    Assignee: Fujitsu Limited
    Inventors: Yusaku Fujii, Takashi Shinzaki, Ken Yokoyama
  • Uneven-surface data detection apparatus
    Patent number: 6127674
    Abstract: There is provided an uneven-surface data input apparatus capable of obtaining a fingerprint image which is seldom distorted, in which it is unnecessary to conduct image processing when the fingerprint image is inputted.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: October 3, 2000
    Assignee: Fujitsu Limited
    Inventors: Takashi Shinzaki, Ken Yokoyama, Yusaku Fujii, Kouji Honma
  • Sandal sole
    Patent number: D413011
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: August 24, 1999
    Inventor: Ken Yokoyama