Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12204280 | Carrier, xerographic developer, and carrier production method | Makoto Ishikawa, Hiroki Sawamoto, Tetsuya Uemura | 2025-01-21 |
| 11029618 | Carrier, electrophotographic developer and production method of carrier | Makoto Ishikawa, Hiroki Sawamoto, Tetsuya Uemura | 2021-06-08 |