Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4556461 | Process for separating highly pure butene-1 or butene-1/isobutene mixture from C.sub.4 hydrocarbon fraction | Shunichiro Ogura | 1985-12-03 |
| 4555312 | Process for separating highly pure butene-1 or butene-1/isobutene mixture from C.sub.4 hydrocarbon fraction | Shunichiro Ogura | 1985-11-26 |
| 4515661 | Process for separating highly pure butene-1 and butene-2 | Shunichiro Ogura | 1985-05-07 |