Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12371765 | Seamless steel pipe suitable for use in sour environment | Seiya OKADA, Hiroki Kamitani, Nobuaki Komatsubara, Yusaku Tomio, Shohei Ikeda | 2025-07-29 |
| 11214855 | Piercer plug and method of manufacturing the same | Yasuyoshi Hidaka, Tatsuya Miyai | 2022-01-04 |
| 10888906 | Method of manufacturing piercer plug | Yasuyoshi Hidaka, Yasuto Higashida, Yuichi Yamanari | 2021-01-12 |