Patents by Inventor Nobuya Ishioka

Nobuya Ishioka 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).

  • Freeze-preventing material and method for preventing pavement surface from freezing
    Patent number: 6126850
    Abstract: A freeze-preventing material comprises cement, salt, and water-absorbing resins. The freeze-preventing material is scattered on the pavement surface in the form of slurry to prevent the pavement surface from freezing. Thereby a freeze-preventing effect is maintained for a long period of time owing to the water-absorbing resins which absorb and retain the salt in large amounts. The anti-freezing effect can be restored by spraying the pavement with the salt again.
    Type: Grant
    Filed: October 6, 1998
    Date of Patent: October 3, 2000
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Nobuya Ishioka, Tetsuhiko Yamaguchi, Masaki Sazawa, Kenichi Kitamura
  • Seedling culture mat
    Patent number: 5934011
    Abstract: A seedling culture mat comprising a mat which comprises a fibrous substrate or a water-soluble film or paper, a nonionic water-absorbing polymer in a film, tape, fiber or powder form which is anchored to the mat and seeds which are applied on the mat.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: August 10, 1999
    Assignee: Showa Denko K. K.
    Inventors: Nobuya Ishioka, Tetsuhiko Yamaguchi