Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6423247 | Phosphorescent pigment and process for preparing the same | Hiroshi Hirashima, Hiroaki Imai, Oh Junrok | 2002-07-23 |
| 6402285 | Method of subjecting ink jet printer to preuse treatment | Toshihiro Endo, Makoto Yasunaga | 2002-06-11 |