Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6821556 | Process for producing heat sensitive recording material | Koichi Ishida, Kazuo Watanabe, Hideki Tsuchida | 2004-11-23 |
| 5851951 | Heat sensitive recording material | Tsunefumi Yamori, Shigeji Matsuzawa | 1998-12-22 |