Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9506132 | Method for manufacturing heavy wall steel pipe | Tatsuro Katsumura, Hiroyuki Fukuda, Koji Sugano, Kazutoshi Ishikawa | 2016-11-29 |
| 9234254 | High-strength seamless steel tube, having excellent resistance to sulfide stress cracking, for oil wells and method for manufacturing the same | Kenichiro Eguchi, Yuji Tanaka, Mitsuo Kimura, Katsumi Yamada, Haruo Nakamichi | 2016-01-12 |
| 8608871 | High-strength steel tube having excellent chemical conversion treatability and excellent formability and method for manufacturing the same | Akio Sato, Yasuhisa Shimizu | 2013-12-17 |
| 7942984 | Steel pipe with good magnetic properties and method of producing the same | Yoshikazu Kawabata, Kei Sakata, Masayuki Sakaguchi, Masayoshi Ishida, Motoaki Itadani +1 more | 2011-05-17 |
| 6652670 | Steel sheet and method for manufacturing the same | Tadashi Inoue, Yoichi Motoyashiki, Hiroyasu Kikuchi, Sadanori Imada, Toru Inazumi | 2003-11-25 |
| 6554925 | Method for manufacturing cold-rolled steel sheet | Tadashi Inoue, Yoichi Motoyashiki, Sadanori Imada, Toru Inazumi | 2003-04-29 |
| 5270020 | Apparatus for manufacturing silicon single crystals | Makoto Suzuki, Masanori Ohmura, Shuzo Fukuda, Yoshinobu Shima, Takeshi Suzuki +1 more | 1993-12-14 |