Issued Patents All Time
Showing 1–25 of 202 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12305597 | Steel pipe for fuel injection pipe, and fuel injection pipe using same | Taizo Makino, Masahiro Yamazaki, Tomohiko Omura, Osamu Endo, Naoki Serizawa +1 more | 2025-05-20 |
| 12188110 | Steel material suitable for use in sour environment | Shinji Yoshida, Kuniaki Itoh, Takuya OKAMURA | 2025-01-07 |
| 12054798 | Steel material and method for producing steel material | Shinji Yoshida, Hiroki Kamitani, Yohei Otome | 2024-08-06 |
| 11905580 | Seamless steel pipe suitable for use in sour environment | Hiroki Kamitani, Nobuaki Komatsubara, Seiya OKADA, Atsushi Soma, Shinji Yoshida | 2024-02-20 |
| 11898216 | Seamless steel pipe heat-treatment-finishing-treatment continuous facility | Hiroki Kamitani, Takanori Tanaka, Atsushi Soma, Keiichi Kondo, Hideki MITSUNARI +3 more | 2024-02-13 |
| 11891680 | Steel material suitable for use in sour environment | Yohei Otome, Hiroki Kamitani, Atsushi Soma, Taro OE, Nobuaki Komatsubara +1 more | 2024-02-06 |
| 11773460 | Steel pipe and method for producing steel pipe | Shinji Yoshida, Atsushi Soma, Hiroki Kamitani | 2023-10-03 |
| 11643712 | Steel pipe and method for producing steel pipe | Shinji Yoshida, Atsushi Soma, Hiroki Kamitani | 2023-05-09 |
| 11492688 | Steel material suitable for use in sour environment | Shinji Yoshida | 2022-11-08 |
| 11471923 | Production method of seamless steel pipe | Kouji Yamane, Kazuhiro Shimoda, Akihiro Sakamoto, Yasuhiko Daimon, Haruka Obe | 2022-10-18 |
| 11473177 | Steel material suitable for use in sour environment | Shinji Yoshida | 2022-10-18 |
| 11453925 | Seamless steel pipe and method for producing same | Takeshi Miki, Yusuke Mihara, Yohsuke Uchida, Masahiro Yamazaki, Masayuki Yamamoto | 2022-09-27 |
| 11434554 | Steel material suitable for use in sour environment | Hiroki Kamitani, Atsushi Soma, Keiichi Kondo, Shinji Yoshida | 2022-09-06 |
| 11332813 | Steel material suitable for use in sour environment | Shinji Yoshida, Atsushi Soma, Hiroki Kamitani | 2022-05-17 |
| 11313005 | Seamless steel pipe and method for producing the seamless steel pipe | Atsushi Soma, Yosuke Tatebayashi, Keisuke Furo, Takenori Kuramoto, Hiroki Kamitani +1 more | 2022-04-26 |
| 11174539 | Steel material suitable for use in sour environment | Hiroki Kamitani, Atsushi Soma, Shinji Yoshida, Seiya OKADA | 2021-11-16 |
| 11155893 | Steel material suitable for use in sour environment | Shinji Yoshida, Atsushi Soma, Hiroki Kamitani | 2021-10-26 |
| 11078558 | Steel material, oil-well steel pipe, and method for producing steel material | Shinji Yoshida, Atsushi Soma, Hiroki Kamitani | 2021-08-03 |
| 11060160 | Low-alloy steel for oil well pipe and method of manufacturing low-alloy steel oil well pipe | Keiichi Kondo, Takanori Sato | 2021-07-13 |
| 10988819 | High-strength steel material and production method therefor | Shinji Yoshida | 2021-04-27 |
| 10752979 | Low alloy oil-well steel pipe | Keiichi Kondo | 2020-08-25 |
| 10655200 | Steel material and oil-well steel pipe | Kengo Hata | 2020-05-19 |
| 10563793 | Low alloy oil-well steel pipe | Keiichi Kondo | 2020-02-18 |
| 10550962 | Steel material and oil-well steel pipe | — | 2020-02-04 |
| 10514564 | Display unit | Yasunobu Kawasaki, Yuki Takano, Hisanori Tsuboi | 2019-12-24 |