Issued Patents 2023
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11697743 | Ink composition, writing instrument and method for producing ink composition | Sachiko Onuki, Kiyonori Yasuike, Haruka Takai | 2023-07-11 |
| 11613663 | Ink composition, writing tool and method for producing ink composition | Katsuji Arisawa, Yoshitaka Morimoto, Hirohisa Suzuki | 2023-03-28 |