Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9921010 | Partitioning member for total heat exchange element, total heat exchange element and total heat exchange ventilator using the partitioning member for total heat exchange element | Miyuki Ootomo | 2018-03-20 |
| 9879869 | Partition member for total heat exchange element, total heat exchange element using this member, and total heat exchange type ventilation device | Miyuki Ootomo, Keita Takahashi | 2018-01-30 |
| 4633735 | Automobile differential gear system | Masao Sakurai, Morimasa Ninomiya, Toshihide Takechi, Kunihiro Nakagawa, Takashi Fujii | 1987-01-06 |