Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6687650 | Indoor environment design system, indoor environment evaluation system, indoor environment design method, and indoor environment evaluation method | Hideyuki Hatanaka, Sadaaki Arikawa | 2004-02-03 |
| 6299727 | Incombustible sound-absorbing electric radiation-absorbing ceiling panel | Hideyuki Hatanaka | 2001-10-09 |