Issued Patents 2018
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10161771 | Measurement device for measuring airflow volume and a ventilation resistance and having a specific opening for allowing an opening plate to be replaceable and differential pressure measurement arrangement | Tomoaki Ikeda, Takahisa Toda, Yo Muramatsu, Katsumichi Ishihara, Hikaru Urushimoto | 2018-12-25 |
| 10080076 | Headphone device | Takayuki Karasawa, Tomoya Takahashi, Naofumi Imai | 2018-09-18 |
| 10036660 | Measurement device having variable opening orifice for measuring airflow volume and ventilation resistance of wind blowing apparatus | Katsumichi Ishihara, Takahisa Toda, Yo Muramatsu, Hikaru Urushimoto | 2018-07-31 |