Patents by Inventor Okamoto Tadashi

Okamoto Tadashi 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).

  • Process of producing resin concrete
    Patent number: 4758610
    Abstract: A soldified and particulated resin and a substantially solidified-state-maintained water are mixed with cement and after the mixing is finished, the solidified resin and water are liquefied and the cement is hydrated with the liquefied water. Since the resin maintains the solidified and particulated state and the water also maintains the solidified state during mixing, the mixing work of cement, water and resin is uniformly performed.
    Type: Grant
    Filed: January 9, 1987
    Date of Patent: July 19, 1988
    Assignee: Mitsui Kensetsu Kabushiki Kaisha
    Inventors: Okamoto Tadashi, Utsunomiya Toru, Tamura Tomio, Matsubara Sumiyuki, Hasuo Koichi