Patents by Inventor Atsushi Tsujikawa

Atsushi Tsujikawa 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).

  • Electronic cash register capable of calculating sales tax
    Patent number: 3946217
    Abstract: A system and method for calculating a sales tax imposed upon a total amount of sales based on a predetermined sales tax collection schedule in an electronic cash register, which schedule comprises a series of the imposable tax values and the corresponding ranges of the taxable sales amounts, a first portion of which comprises a pattern of widths of successive said ranges in for the successively increasing, respectively corresponding tax values which does not occur again in the remainder of the schedule and a second portion of which comprises a pattern of widths of successive said ranges for successively increasing, respectively corresponding tax values which pattern repeats in a regular fashion while the tax value becomes higher.
    Type: Grant
    Filed: July 26, 1974
    Date of Patent: March 23, 1976
    Assignee: Omron Tateisi Electronics Co.
    Inventors: Atsushi Tsujikawa, Yoshio Morimoto