Issued Patents 2003
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6666542 | Ink cartridge for printer or the like and ink cartridge positioning and locking mechanism | Masatoshi Yoshiyama, Yoshio Nakagawa, Toyonori Sasaki | 2003-12-23 |
| 6655134 | Exhaust control valve | Tetsuya Nakayasu, Mikio Sagara, Kyo Takahashi, Noritoshi Iwase, Hajime Yamada | 2003-12-02 |
| 6619776 | Image forming device capable of detecting existence of ink and ink cartridge with high accuracy | Masatoshi Yoshiyama, Tetsuya Ouchi, Kazuhiro Hayamizu | 2003-09-16 |
| 6616255 | Ink cartridge, printing apparatus using the ink cartridge, method for detecting remaining amount of ink using the ink cartridge | Masatoshi Yoshiyama | 2003-09-09 |
| D479265 | Ink cartridge | Toyonori Sasaki, Mitsuharu Hattori, Masatoshi Yoshiyama | 2003-09-02 |
| 6609367 | Exhaust control valve | Tetsuya Nakayasu, Mikio Sagara, Kyo Takahashi, Noritoshi Iwase, Hajime Yamada | 2003-08-26 |
| 6601673 | Sound absorbing structure | Takumi Arisawa, Motonori Kondoh, Kazuo Nishimoto, Takahiro Niwa | 2003-08-05 |
| 6578954 | Ink jet printing head and ink jet printing device enabling stable high-frequency ink drop ejection and high-speed printing | Masakazu Okuda, Toshinori Ishiyama | 2003-06-17 |