Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4530720 | High temperature oxidation resistant austenitic steel | Hisao Fujikawa, Junichiro Murayama, Yuji Shoji | 1985-07-23 |
| 4421571 | Process for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking | Takeo Kudo, Yasutaka Okada, Akio Ikeda, Hiroo Ohtani, Kunihiko Yoshikawa | 1983-12-20 |
| 4400210 | Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking | Takeo Kudo, Yasutaka Okada, Akio Ikeda, Hiroo Ohtani, Kunihiko Yoshikawa | 1983-08-23 |
| 4400349 | Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking | Takeo Kudo, Yasutaka Okada, Akio Ikeda, Hiroo Ohtani, Kunihiko Yoshikawa | 1983-08-23 |
| 4400211 | Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking | Takeo Kudo, Yasutaka Okada, Akio Ikeda, Hiroo Ohtani, Kunihiko Yoshikawa | 1983-08-23 |
| 4400209 | Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking | Takeo Kudo, Yasutaka Okada, Akio Ikeda, Hiroo Ohtani, Kunihiko Yoshikawa | 1983-08-23 |
| 4360381 | Ferritic stainless steel having good corrosion resistance | Yoshio Tarutani, Masao Koike | 1982-11-23 |