Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5498281 | Recording material containing carbonaceous powder whose surface is modified with fluorine gas | Hiroyuki Idogawa, Nobuatsu Watanabe, Yong-Bo Chong | 1996-03-12 |
| 5437715 | Recording material containing carbonaceous powder whose surface is modified with fluorine gas | Hiroyuki Idogawa, Nobuatsu Watanabe, Yong-Bo Chong | 1995-08-01 |