Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11047720 | Gas meter system and heating value estimation method | Masakazu Hishinuma | 2021-06-29 |
| 10655068 | Gas meter system and heating value derivation method | Masakazu Hishinuma | 2020-05-19 |
| 10613056 | Heating value derivation device and heating value derivation method | Yutaka Kunigo, Masakazu Hishinuma, Hironori Imanishi | 2020-04-07 |