Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7858381 | Process for preparing high-purity, halogen-free o-phthaladehyde | Karlheinz Giselbrecht, Klaus Reiter | 2010-12-28 |
| 6545186 | Process for the purification of ketones obtained from the corresponding terpenes by ozonolysis and reduction | Karlheinz Giselbrecht, Josef Schaller, Klaus Reiter | 2003-04-08 |
| 6486327 | Method for producing hydroxymethylpyridines | Karlheinz Giselbrecht | 2002-11-26 |
| 6486358 | Process for the purification and formulation of o-phthalaldehyde | Karlheinz Giselbrecht, Walter Raml | 2002-11-26 |
| 5874637 | Process for the purification of o-phthalaldehyde | Karl-Heinz Giselbrecht, Klaus Reiter, Eduard Perndorfer | 1999-02-23 |