Patents by Inventor Tatsuo Hatado

Tatsuo Hatado 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).

  • Plant growth sheet structure, natural turf sheet structure, method of growing turf and method of laying turf sheet structure
    Patent number: 6219965
    Abstract: This invention provides a plant growth sheet structure which includes a base web layer and a core layer integrally coupled together in this order, a base web layer, a plant seed holding layer and a core layer integrally coupled together in this order, or a base web layer, a core layer, a plant seed holding layer and a cover web layer integrally coupled together in this order, and is provided at its surface with plant protection projections, and also provides a natural turf sheet structure including a natural turf grown on the plant growth sheet structure.
    Type: Grant
    Filed: July 15, 1997
    Date of Patent: April 24, 2001
    Assignees: Otsuka Kagaku Kabushiki Kaisha, Maedakensetsukogyo Kabushiki Kaisha
    Inventors: Yoshio Ishikawa, Hiroaki Fukumoto, Toshimasa Hirasawa, Tatsuo Hatado, Akira Taga, Kaoru Yamada