Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11965332 | Ceiling panel | Yoshihiro Okada, Tatsuji Ono | 2024-04-23 |
| 11898350 | Ceiling panel | Yoshihiro Okada, Tatsuji Ono | 2024-02-13 |
| 11781318 | Ceiling panel | Yoshihiro Okada, Tatsuji Ono | 2023-10-10 |
| 10344515 | Travel assistance device and sliding door device provided with same | Masashi Ishii, Shinji ADACHI, Tomoyasu Hirano, Yoshiaki Kaji | 2019-07-09 |
| 9921538 | Image forming apparatus and bias power-supply device | — | 2018-03-20 |
| 8891985 | Bias power supply device and image forming apparatus | — | 2014-11-18 |
| 7792462 | Image formation apparatus with toner retention member | Jin Iwasaki | 2010-09-07 |
| 7603058 | Image formation apparatus with residue toner charging section with nonwoven fabric | Jin Iwasaki | 2009-10-13 |
| 7024125 | Charging device and image forming apparatus | Yasutomo Ishii | 2006-04-04 |