Issued Patents 2022
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11267978 | Reversibly thermochromic aqueous ink composition and writing instrument using the same | Katsuyuki Fujita, Masayuki MITA, Tomoyuki Yamamura | 2022-03-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11267978 | Reversibly thermochromic aqueous ink composition and writing instrument using the same | Katsuyuki Fujita, Masayuki MITA, Tomoyuki Yamamura | 2022-03-08 |