Patents by Inventor Naoya Kawaguchi

Naoya Kawaguchi 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 cultivation bed and plant cultivation block
    Patent number: 5675933
    Abstract: The invention provides a cultivation medium promoting germination of plants and growth of the seedlings while precluding the plant from suffering damage from insect pests. The cultivation medium comprises a particulate, granular or fibrous rubber. Particulate, granular or fibrous pieces of plant or soil can further be incorporated into the medium. Seeds of a plant are sown on the cultivation medium or mixed with the medium for cultivating the plant.
    Type: Grant
    Filed: April 23, 1996
    Date of Patent: October 14, 1997
    Inventors: Tadashi Kawaguchi, Naoya Kawaguchi