Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6805133 | Apparatus for stabilizing air permeability characteristic of filter cigarettes | Yasuyuki Takagi | 2004-10-19 |
| 6800009 | Bulb-form lamp and its manufacturing method | Tetsuo Matsuba, Shinichiro Ishitsuka, Takenori Shibata | 2004-10-05 |
| 6717341 | Bulb-form lamp and its manufacturing method | Tetsuo Matsuba, Shinichiro Ishitsuka, Takenori Shibata | 2004-04-06 |