Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4421571 | Process for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking | Takeo Kudo, Yasutaka Okada, Taishi Moroishi, Akio Ikeda, Kunihiko Yoshikawa | 1983-12-20 |
| 4400209 | Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking | Takeo Kudo, Yasutaka Okada, Taishi Moroishi, Akio Ikeda, Kunihiko Yoshikawa | 1983-08-23 |
| 4400210 | Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking | Takeo Kudo, Yasutaka Okada, Taishi Moroishi, Akio Ikeda, 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, Taishi Moroishi, Akio Ikeda, 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, Taishi Moroishi, Akio Ikeda, Kunihiko Yoshikawa | 1983-08-23 |
| 4394187 | Method of making steels which are useful in fabricating pressure vessels | Seiichi Watanabe | 1983-07-19 |
| 4375377 | Steels which are useful in fabricating pressure vessels | Seiichi Watanabe | 1983-03-01 |
| 4344801 | Heavy thick high-strength casting having improved weldability and impact properties | Tatsuro Kunitake, Seiichi Watanabe, Toshiji Takigawa, Yoshiro Matsumoto | 1982-08-17 |