Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5650689 | Vacuum airtight device having NbN electrode structure incorporated therein | Shigeo Itoh, Teruo Watanabe, Yoshihiko Hirata, Susumu Takada, Hiroshi Nakagawa | 1997-07-22 |
| 5612587 | Field emission cathode | Shigeo Itoh, Teruo Watanabe, Junji Itoh, Seigo Kanemaru | 1997-03-18 |