Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4967019 | Method of manufacturing 2-propyn-1-ol | Karl Aertken, Thomas Stieren | 1990-10-30 |
| 4952292 | Process for manufacturing 2,4-hexadiyne-1,6-diol | Srinivasan Sridhar | 1990-08-28 |
| 4855516 | Method of manufacturing 2-propyn-1-ol | Karl Aertken, Thomas Stieren | 1989-08-08 |
| 4847440 | Method of manufacturing propynol | Karl Aertken, Thomas Stieren | 1989-07-11 |
| 4388216 | Regenerating heavy metal catalysts for butynediol production | Franz Schamann, deceased | 1983-06-14 |
| 4373999 | Distillation of butinediol-1,4 | Karl Aertken | 1983-02-15 |
| 4205045 | Radial-flow reactor with heatable catalyst filling | Peter Schimpff, Ferdinand Botthof | 1980-05-27 |