Patents by Inventor Shuuzi Katayama

Shuuzi Katayama 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 transmission error detection in an electronic cash register system
    Patent number: 5051899
    Abstract: A data error-checking system including a transmitting cash register and a receiving cash register, connected to each other in series in a loop formation. Its operation includes the serial transfer of data from the transmitting cash register to the receiving cash register simultaneous with data transfer from the receiving cash register to the transmitting cash register, and comparison of the data transferred from the transmitting cash register with the corresponding data transferred back from the receiving cash register to the transmitting cash register.
    Type: Grant
    Filed: February 2, 1990
    Date of Patent: September 24, 1991
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Keiichi Ikoma, Shuuzi Katayama, Shizuo Nakai, Kenji Miwa