Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11543782 | Timepiece | Hiroshi Katsuda, Tomoyasu KUROKAWA | 2023-01-03 |
| 11237526 | Antenna device and wristwatch type electronic device | Kazunori Kita, Hiroshi Katsuda | 2022-02-01 |
| D715355 | Toner cartridge | Akihito Akaishi, Moriyuki Kouroku | 2014-10-14 |
| D713872 | Drum cartridge | Akihito Akaishi, Moriyuki Kouroku | 2014-09-23 |