Patents by Inventor Takasuke Iwama

Takasuke Iwama 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 of discriminating between the front and back sides of paper sheets
    Patent number: 4557597
    Abstract: Described is a method of discriminating between front and back sides of the paper sheet bearing different printed design on the front and back sides, the printed design being in dissymmetry both in the up and down direction and in the left and right direction. The amount of light transmitted through plural portions of the paper sheet is sensed for deriving pattern signals indicative of changes in the amount of transmitted light, said pattern signals being then compared to reference pattern signals stored in advance to permit discrimination between the upper and lower edges and between the front and back sides of the sheet.
    Type: Grant
    Filed: May 20, 1983
    Date of Patent: December 10, 1985
    Assignee: Musashi Engineering Kabushiki Kaisha
    Inventor: Takasuke Iwama