Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6448439 | Method for producing acrylic acid and methacrylic acid | Otto Machhammer, Theo Proll, Volker Schliephake, Joachim Thiel, Klaus Bröllos | 2002-09-10 |
| 6433222 | Method for producing acrylic acid | Jorg Heilek, Volker Schliephake, Theo Proll, Klaus Bröllos, Otto Machhammer +1 more | 2002-08-13 |
| 6414190 | Purification of acrylic acid by crystallization by means of vacuum evaporation | Jorg Heilek, Volker Schliephake | 2002-07-02 |