Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6532713 | Joint structure for joining composite beam and column | Satosi Katayama, Masaharu Fukunisi, Hiroaki Saitou, Masaaki Katou, Syuuiti Gouya +1 more | 2003-03-18 |
| 5347665 | Carbonate spring bath system | Harue Kawagoe, Shin Matsugi, Hiroshi KANO, Noriyoshi Nakaoka, Shoichi Morii +4 more | 1994-09-20 |
| 4907305 | Bubbling bathtub system | Keiichi Teramachi, Harue Kawagoe, Shinya Hirota, Hidehiko Kishie, Tsutomu Amaki +1 more | 1990-03-13 |