Patents by Inventor Takanobu Niizeki

Takanobu Niizeki 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).

  • Refractory/heat insulating panels
    Patent number: 5678369
    Abstract: Disclosed is a refractory/heat insulating panel used in buildings and structures which must have a refractory performance. In the refractory/heat insulating panel (801), the mechanical strength and the fireproofing performance at the joint portions, which are weak portions in the panel, are increased by integrally forming inorganic boards (831) in the male and female joint portions (832, 836), filling a light-weight aggregate in the core material located at the male and female joint portions at a high density, or making the density of the core material at the joint portions higher than that at the center of the panel.
    Type: Grant
    Filed: August 24, 1994
    Date of Patent: October 21, 1997
    Assignee: IG-Technical Research Inc.
    Inventors: Takashi Ishikawa, Hideki Takiguchi, Fumio Takahashi, Minoru Saitoh, Hiroaki Konta, Takanobu Niizeki, Masahiko Suzuki, Hiroyuki Umetsu, Yoshihiko Kanno, Toshihide Kokubun