Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9366423 | LED illumination device | Jongkook Park, Kazuhiro Katou, Mitsuyoshi Ishikawa | 2016-06-14 |
| 4293227 | Spraying unit for unhardened concrete and the like | Katsushi Tanaka | 1981-10-06 |