Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5410216 | Gas discharge tube capable of lighting in different colors | Ryohei Itatani, Masatoshi Ryohko | 1995-04-25 |
| 5132590 | Gas discharge tube capable of lighting in different colors | Ryohei Itatani, Ryohko Masatoshi | 1992-07-21 |
| 4852285 | Luminous gas-discharge sign panel | — | 1989-08-01 |