Patents by Inventor Hiroyki Fukayama

Hiroyki Fukayama 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).

  • Data carrier
    Patent number: 5521590
    Abstract: A data carrier with no battery for reading and writing data transmitted to and from fixed facilities separated from the data carrier by several centimeters, and for rewriting and reading data during use. The data carrier incorporates a MONOS EEPROM, a unit for receiving data from the fixed facilities and writing the data to the EEPROM, and a unit for reading data out of the EEPROM and transmitting the data to the fixed facilities.
    Type: Grant
    Filed: November 26, 1993
    Date of Patent: May 28, 1996
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Tadashi Hanaoka, Hiroyki Fukayama