Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4645576 | Process for isolating and recovering butene-1 of high purity | Tetsuya Takezono, Hirosuke Imai | 1987-02-24 |
| 4356339 | Process for isolating and recovering butene-1 of high purity | Masao Imaizumi, Tetsuya Takezono, Yutaka Oguchi | 1982-10-26 |