Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6437199 | Method for production of high-purity monoethylene glycol | Yoshihisa Oka, Yutaka Sugiyama, Kenji Suzuki, Hironori Horie | 2002-08-20 |
| 6425793 | Impregnated cathode and method of manufacturing same, electron gun and electron tube | Yoji Hasegawa, Shinji Ogawa, Daichi Imabayashi, Nobuyuki Yoshino, Junji Sato +3 more | 2002-07-30 |