Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5799716 | Electric-powered shutter apparatus for a building opening | Kenji Yamaguchi, Tadashi Sasaki, Akira Koyano | 1998-09-01 |
| D328353 | Adjustable skylight | Kenji Yamaguchi | 1992-07-28 |
| D328354 | Adjustable skylight | — | 1992-07-28 |
| 5115601 | Movable sky light | Kenji Yamaguchi, Fumitoshi Okazaki, Daisuke Hozumi | 1992-05-26 |
| 5064717 | Adhesive sheet | Hideaki Suzuki, Shuichiro Takeda, Rinzo Kamikura | 1991-11-12 |
| 4498313 | Compact helium gas-refrigerating and liquefying apparatus | Hiromi Hirabayashi | 1985-02-12 |