Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6626628 | Pushing device for large sweeper | Yuji Kawai | 2003-09-30 |
| 6230363 | Large-scale cleaning vehicle | Katsutoshi Nakamura | 2001-05-15 |
| 5987699 | Large-scale cleaning vehicle | Katsutoshi Nakamura | 1999-11-23 |
| 5922293 | Process for purifying exhaust gases | Naoto Miyoshi, Mareo Kimura, Yoko Kumai | 1999-07-13 |
| 5839154 | Chewing gum remover | Katsutoshi Naramura, Yoshihide Takahashi | 1998-11-24 |
| 5804152 | Method for purifying exhaust gases | Naoto Miyoshi, Hiromasa Suzuki, Osamu Ogawa, Mareo Kimura, Koji Yokota +2 more | 1998-09-08 |
| 5556321 | Method and apparatus for grinding elongated knife blade | Yoshiyuki Kasahara, Hajime Segawa, Mikio Yamauchi, Toshihiro Kuno, Hiroshige Mizutani | 1996-09-17 |
| 4955107 | Suction cleaner | — | 1990-09-11 |
| 4730981 | Ceiling fan | — | 1988-03-15 |
| D292313 | Ceiling fan | — | 1987-10-13 |
| D290748 | Combined ceiling fan and light | — | 1987-07-07 |
| 4560321 | Ceiling fan | — | 1985-12-24 |