Patents by Inventor Yoshiaki Niitani

Yoshiaki Niitani 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).

  • Insecticidal device
    Patent number: 3972993
    Abstract: An insecticidal device includes a core of an insect-attracting substance. The core is substantially covered with at least one perforated cover sheet covering at least part of the surface of the core, the cover sheet being coated on its exposed outer surface with a insecticidal agent. The perforations in the cover sheet have dimensions such that an insect trying to reach the insect-attracting substance will necessarily contact the insecticidal agent on the exposed outer surface of the cover sheet.
    Type: Grant
    Filed: November 7, 1974
    Date of Patent: August 3, 1976
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hidetoshi Kobayashi, Yoshiaki Niitani, Hilomithu Abiru