Patents by Inventor Takafumi Bannai

Takafumi Bannai 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).

  • Calculator with display of processing for mulas as processing progresses
    Patent number: 5519646
    Abstract: The invention provides a calculator wherein it is possible to start an operation on the basis of an inputted formula and successively know the progress processes of operation until an operation result is obtained. An inputted formula edited on the basis of the data inputted from a keyboard is once displayed and the calculator is placed in the state of waiting for key entry. Then, when a Enter key is pressed down, only the operator codes selected among plural operator codes in the inputted formula in accordance with the priority order of operation are processed and a process formula as the result of the processing is displayed. Thereafter, every time the Enter key is pressed down, the operation is executed in accordance with the priority order and the process formulas obtained in the respective operations are successively displayed.
    Type: Grant
    Filed: July 13, 1994
    Date of Patent: May 21, 1996
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Syuji Uemura, Yoshihiro Okuda, Syuuji Kaya, Toshiro Oba, Akiyoshi Satoh, Katsumasa Tsuneyoshi, Fumiaki Kawawaki, Takafumi Bannai