Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5727131 | Neural network learning device | Hiroaki Tanaka, Tomohisa Yoshimi, Takayoshi Kawai, Yuji Ito, Yuji Takeo | 1998-03-10 |
| 5118220 | Method of building underground cavern and tunneling machine | Kihachior Furumi | 1992-06-02 |
| 4675634 | Variable-capacitance tuning circuit for high-frequency signals | Seiji Matsushita, Akira Fujishima, Isao Arika | 1987-06-23 |
| 4637758 | Method of driving hollow piles into the ground | Hiroaki Tamaki | 1987-01-20 |
| 4494613 | Method and apparatus for driving hollow piles into the ground | Hiroaki Tamaki | 1985-01-22 |
| 4363518 | Method and apparatus for fracturing rock beds | Shigetake Akanuma | 1982-12-14 |
| 4329665 | Noise suppressing connector | Senji Kawai, Yoshihumi Morimoto, Masayuki Watanabe, Hiroshi Yamaya, Hitoshi Kurohata | 1982-05-11 |
| 4205019 | Process for producing thermoplastic resin | Takesaburo Shima, Hiroshi Kozima, Tomio Yoshida | 1980-05-27 |
| 4193634 | Method and apparatus for excavation | Kihachiro Furumi | 1980-03-18 |