Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10738371 | As-rolled type K55 electric resistance welded oil well pipe and hot-rolled steel sheet | Takashi TSUSUE, Shuji Iwamoto, Shunichi Kobayashi, Toshiyuki Ogata, Osamu Yoshida +1 more | 2020-08-11 |
| 10640843 | High strength electric resistance welded steel pipe and method for producing high strength electric resistance welded steel pipe | Shuji Iwamoto, Takashi TSUSUE, Shunichi Kobayashi, Osamu Yoshida, Hideto Kawano | 2020-05-05 |
| 8920583 | Steel pipe excellent in deformation characteristics and method of producing the same | Hitoshi Asahi, Motofumi Koyuba, Toshiyuki Ogata | 2014-12-30 |
| 6060180 | Alloy having high corrosion resistance in environment of high corrosiveness, steel pipe of the same alloy and method of manufacturing the same steel pipe | Koichi Nose | 2000-05-09 |
| 5620805 | Alloy and multilayer steel tube having corrosion resistance in fuel combustion environment containing V, Na, S and Cl | Hiroyuki Ogawa, Koichi Nose | 1997-04-15 |
| 5194222 | Alloy and composite steel tube with corrosion resistance in combustion environment where V, NA, S and C1 are present | Hiroyuki Ogawa, Kozo Denpo, Akihiro Miyasaka, Michihisa Ito, Mizuo Sakakibara | 1993-03-16 |
| 5190832 | Alloy and composite steel tube with corrosion resistance in combustion environment where V, Na, S and Cl are present | Hiroyuki Ogawa, Kozo Denpo, Akihiro Miyasaka, Koichi Takeda, Satoshi Araki | 1993-03-02 |