| 11905765 |
Threaded joint for pipes |
Jun Takano, Takamasa Kawai, Seigo Goto, Masaki Yoshikawa, Tsuyoshi Yoneyama |
2024-02-20 |
| 11549620 |
Screw joint for oil well pipe |
Takamasa Kawai, Masaki Yoshikawa, Jun Takano, Haruhiko Seki |
2023-01-10 |
| 11053749 |
Threaded joint for oil well steel pipe |
Takamasa Kawai, Taro Kanayama, Masaki Yoshikawa, Jun Takano |
2021-07-06 |
| 10443765 |
Threaded joint for pipes |
Hiroshi Chikatsune, Kazunari Takahashi, Masaki Yoshikawa, Jun Takano, Masateru Ueta +1 more |
2019-10-15 |
| 10295091 |
Threaded joint for tube |
Masaki Yoshikawa, Hiroshi Chikatsune, Kazunari Takahashi, Jun Takano, Masateru Ueta +1 more |
2019-05-21 |
| 10202809 |
Threaded joint for steel pipes |
Osamu Sonobe, Masaki Yoshikawa, Jun Takano, Takamasa Kawai |
2019-02-12 |
| 10125554 |
Threaded joint for oil country tubular goods |
Takamasa Kawai, Kazunari Takahashi, Hiroshi Chikatsune, Masaki Yoshikawa, Jun Takano +4 more |
2018-11-13 |
| 9982815 |
Threaded joint for oil country tubular goods |
Takamasa Kawai, Kazunari Takahashi, Hiroshi Chikatsune, Masaki Yoshikawa, Jun Takano +4 more |
2018-05-29 |
| 9982491 |
Threaded joint for oil country tubular goods |
Takamasa Kawai, Kazunari Takahashi, Hiroshi Chikatsune, Masaki Yoshikawa, Jun Takano +1 more |
2018-05-29 |
| 9709196 |
Threaded joint for heavy-walled oil country tubular goods |
Takamasa Kawai, Kazunari Takahashi, Hiroshi Chikatsune, Masaki Yoshikawa, Jun Takano +4 more |
2017-07-18 |
| 9657873 |
Threaded joint for pipes |
Takamasa Kawai, Kazunari Takahashi, Hiroshi Chikatsune, Masaki Yoshikawa, Jun Takano +2 more |
2017-05-23 |
| 9470345 |
Threaded joint for pipes |
Masaki Yoshikawa, Hiroshi Chikatsune, Jun Takano, Takamasa Kawai, Masateru Ueta +2 more |
2016-10-18 |
| 9194190 |
Threaded joint for pipe |
Osamu Sonobe, Masaki Yoshikawa, Jun Takano, Takamasa Kawai, Kazunari Takahashi |
2015-11-24 |
| 8991875 |
Threaded joint for steel pipes |
Masaki Yoshikawa, Hiroshi Chikatsune, Jun Takano, Takamasa Kawai, Kazunari Takahashi +2 more |
2015-03-31 |
| 6749954 |
Welded steel pipe having excellent hydroformability and method for making the same |
Takaaki Toyooka, Masatoshi Aratani, Yoshikazu Kawabata, Yuji Hashimoto, Akira Yorifuji +2 more |
2004-06-15 |
| 6723453 |
Welded steel pipe having excellent hydroformability and method for making the same |
Takaaki Toyooka, Masatoshi Aratani, Yoshikazu Kawabata, Yuji Hashimoto, Akira Yorifuji +2 more |
2004-04-20 |
| 6682829 |
Welded steel pipe having excellent hydroformability and method for making the same |
Takaaki Toyooka, Masatoshi Aratani, Yoshikazu Kawabata, Yuji Hashimoto, Akira Yorifuji +2 more |
2004-01-27 |