Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5630230 | Cooling cap element | Yuuichi Matsuura | 1997-05-20 |
| 4680822 | Bedding incorporating far infrared radiator | Morihiro Kabaya | 1987-07-21 |
| 4637947 | Heat insulation material | Taijiro Maekawa | 1987-01-20 |