Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6703511 | Method for obtaining pure n-vinyl pyrrolidone | Jorg Heilek, Martin Schmidt-Radde, Herbert Helfert | 2004-03-09 |
| 6700016 | Method of purifying and producing acrylic acid or methacrylic acid | Jorg Heilek, Dieter Baumann, Volker Schliephake | 2004-03-02 |