Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821412 | Method of producting an electric contact | Tatsuhiro Tani, Masaaki Ishiguri, Akio Ohyama | 1989-04-18 |
| 4628720 | Method of production of cylindrical body | Tatsuhiro Tani, Hiroyuki Nagasawa, Tosio Tomite, Hidemitsu Kobayashi | 1986-12-16 |