Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6638036 | Method of manufacturing ventilating device and the ventilating device | Kenji Kobayashi, Tomoyuki Shibuya, Koji Okada, Takaaki Matsubara | 2003-10-28 |
| 5263894 | Methods and apparatus for ventilating carriages | Shinichiroo Ishikawa, Hiroshi Higaki, Atsushi Ikio, Masakazu Matsumoto | 1993-11-23 |
| 5137490 | Ventilating equipment for railway rolling stock and operating method thereof | Shinichirou Ishikawa, Toshiharu Matsuda, Hiroshi Higaki, Atsushi Ikio, Masakazu Matsumoto | 1992-08-11 |