Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D961423 | Light-receiving status indicator light for photoelectric sensor | Junji Tanaka, Heita Nada | 2022-08-23 |
| 10657778 | Door switch | Keishi Yayama, Kazuhiro Kudo, Kenji Shimazu | 2020-05-19 |
| 10540866 | Door switch | Keishi Yayama, Kazuhiro Kudo | 2020-01-21 |