Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6475935 | Regenerator and regenerative material used therein | Yuzo Hayashi | 2002-11-05 |
| 6344789 | Voltage non-linear resistor unit and arrester unit | Takeshi Udagawa, Masahiro Kan, Nobuyuki Shimizu, Hironori Suzuki, Hiroyoshi Narita +8 more | 2002-02-05 |