Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6820751 | Light-transmittable linear photocatalytic filter material, filter to which the material is applied, and process for production thereof | Souji Arai | 2004-11-23 |
| 6764655 | Photocatalyst filter for a light leakage type | Jumpei Hama, Soji Arai | 2004-07-20 |