Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865913 | Thermal transfer ink sheet | Hikaru Takeuchi, Masato Yoshida | 1989-09-12 |
| 4487826 | Diazotype heat development recording medium with hydrophobic salt of alkyl substituted guanidine | Niro Watanabe, Hiroyuki Yasujima, Kaneki Yoshida | 1984-12-11 |