Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12264949 | Gas flow estimation method, hole diameter estimation method, gas flow rate estimation device, and hole diameter estimation device | Hajime Yoshida, Yoshinori Takei, Kenta ARAI, Tsutomu Hara, Jun Inomata | 2025-04-01 |
| 11860065 | Method for leak testing and reference leak device for leak testing | Tsutomu Hara, Naoto Izumo, Masaharu Sugihara | 2024-01-02 |
| 11408795 | Sealability evaluation method and the like and standard artificial leak device | Yasuhiko Higuchi, Masakazu Ito, Yuho Matsui | 2022-08-09 |
| 11248984 | Method for leak testing and reference leak device for leak testing | Tsutomu Hara, Naoto Izumo, Masaharu Sugihara | 2022-02-15 |