Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4692313 | Apparatus for thermal cracking of or heating of hydrocarbons | Yoji Watanabe, Yukio Toyoda | 1987-09-08 |
| 4454021 | Method for thermal cracking of hydrocarbons in an apparatus of an alloy having alkali or alkaline earth metals in the alloy to minimize coke deposition | Yoji Watanabe, Yukio Toyoda | 1984-06-12 |
| 4252561 | Chromium-alloyed steel which is corrosion resistant to caustic alkaline solution | Tadao Hirano, Ryoichi Yoshimura | 1981-02-24 |