Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5672559 | Reversible thermal recording medium and method of producing the same | Yuji Nakatsu, Keiki Yamada, Masaru Ohnishi | 1997-09-30 |
| 5658845 | Reversible thermal recording medium and method of producing the same | Yuji Nakatsu, Keiki Yamada, Masaru Ohnishi | 1997-08-19 |
| 5637551 | Reversible thermal recording medium and method of producing same | Yuji Nakatsu, Keiki Yamada, Masaru Ohnishi | 1997-06-10 |