Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11942666 | Precursor sheet for fuel cell separator, and fuel cell separator | Tomoyuki Araki, Miho Iwai, Takehiro Okei | 2024-03-26 |
| 11515547 | Fuel cell separator precursor, and fuel cell separator | Takehiro Okei, Shoya Ashizaki | 2022-11-29 |
| 10699665 | Semiconductor device, portable terminal device, and operation detecting method | — | 2020-06-30 |
| 9134752 | Time measurement device, micro-controller and method of measuring time | — | 2015-09-15 |
| D712835 | Capacitor cell | Hiroshi Yoshida | 2014-09-09 |