Patents by Inventor Fujio Nakajima

Fujio Nakajima 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).

  • Paper products having perforations and perforate pattern
    Patent number: 5198276
    Abstract: Paper products having perforations and perforate pattern for use in a blank of paper or synthetic paper and an envelope, or the like.The paper products comprises a paper, a vertical notch provided at upper end portion of the paper, and a plurality of Y shaped notches, which are provided in such a manner that first Y shaped notches have three notches, upper ends of upper opened two notches are positioned at the lower end of the notch on a horizontal line, and upper ends of upper opened two notches of second Y shaped notches are positioned at the lower end of the notch on a horizontal line, and so on until a lower end portion of the paper.
    Type: Grant
    Filed: February 14, 1992
    Date of Patent: March 30, 1993
    Inventor: Fujio Nakajima