Patents by Inventor Hirohiko Ohishi

Hirohiko Ohishi 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).

  • Method and apparatus for roller leveler
    Patent number: 4887343
    Abstract: In a roller leveler having a number of work rollers, an improvement is proposed when a junction of metal web passes. Position detecting circuitry detects the junction of the metal web to output a detection signal. In response to the detection signal, an arithmetic unit applies an instruction signal to a depression control unit so that an amount of adjustment to be given to the metal web in the roller leveler is controlled to a suitable value.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: December 19, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Hirohiko Ohishi