Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12409661 | Liquid discharge apparatus and control method thereof | Kei Kosaka | 2025-09-09 |
| 12304214 | Printing apparatus and ink quantity detection method thereof | Hirokazu Yoshikawa, Kei Kosaka | 2025-05-20 |
| 11919309 | Liquid discharge apparatus, control method, and computer-readable storage medium | Kei Kosaka | 2024-03-05 |
| 11827023 | Liquid discharge apparatus and control method thereof | Kei Kosaka | 2023-11-28 |
| 11351794 | Printing apparatus and ink quantity detection method thereof | Hirokazu Yoshikawa, Kei Kosaka | 2022-06-07 |
| 11192379 | Printing apparatus, control method of the same, and transportation method of the same | Hirokazu Yoshikawa, Kei Kosaka, Koki Shimada, Yusuke Tanaka | 2021-12-07 |