Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8580775 | Use of derivatives of sinapinic acid and compositions comprising such derivatives | Philippe Moussou, Louis Danoux, Andreas Rathjens | 2013-11-12 |
| 7582600 | Use of unsaturated ketones as a perfume | Volker Porrmann, Frank Rittler | 2009-09-01 |
| 7537933 | Method for determining the enantiomer ratio trimethylcyclopentene derivatives | Armin Mosandl, Steffi Bilke | 2009-05-26 |
| 7476647 | Ether lactone | Alfred Westfechtel, Volker Porrmann | 2009-01-13 |
| 7259135 | Use of hexenal derivatives as perfumes | Marc Speitkamp, Frank Rittler | 2007-08-21 |
| 7169749 | Method for producing alkyl-substituted butenols | Lothar Friesenhagen, Stephan Heck, Norbert Klein, Gerrit Pelzer, Markus Schneider | 2007-01-30 |
| 7129205 | Dimethylbenzene derivatives | Werner Faber, Theo Ten Pierik | 2006-10-31 |
| 7060668 | 2,3, 5, 5-tetramethylhexanal derivatives | Volker Porrmann | 2006-06-13 |
| 6933270 | 3,3-Dimethylcyclohexane derivatives | Ralph Nemitz, Theo Ten Pierik | 2005-08-23 |
| 6867175 | Trimethyldecenyl compounds | Theo Ten Pierik, Werner Faber | 2005-03-15 |
| 6864225 | Cyclic ketals, fragrance compositions containing the same and methods of using the same | Theo Ten Pierik, Werner Faber | 2005-03-08 |
| 6632787 | Carbonyl compounds, methods of making the same, and their use as fragrances and fragrance-enhancing additives | Ute Lemke, Elke Veit, Theo Ten Pierik, Ralph Nemitz, Volker Porrmann +1 more | 2003-10-14 |
| 6555517 | Methods of providing a fragrance to a composition and methods of enhancing fragrances using cyclooctadiene hydroformylation products | Volker Porrmann, Theo Ten Pierik | 2003-04-29 |
| 6541446 | Methods of providing a fragrance to a composition and methods of enhancing fragrances using (di)methyl-substituted cycloot(adi)ene hydroformylation products | — | 2003-04-01 |
| 6541445 | Utilization of tricyclic aldehydes as odoriferous agents | — | 2003-04-01 |
| 6537963 | Methods of providing a fragrance to a composition and methods of enhancing fragrances using bicyclo[3.3.0]-oct(adi)ene hydroformylation products | — | 2003-03-25 |
| 6451758 | Aldehyde mixtures, compositions containing the same and methods of providing fragrance using the same | Theo Ten Pierik | 2002-09-17 |
| 6376457 | Phenoketals and the use thereof as odoriferous substances | Ralph Nemitz | 2002-04-23 |
| 6313354 | Method for producing aromatic aldehydes | Ralph Nemitz | 2001-11-06 |
| 6297390 | Method for preparing optically active 5-methyl-2-(1-methyl-butyl)-5-propyl-1,3-dioxan | Dirk Merkel, Hans-Josef Altenbach | 2001-10-02 |
| 6028231 | Process for preparing 2-methyl-4-(2,2,3-trimethyl-cyclopent-3-en-1-yl)-but-2-en-1-ol | — | 2000-02-22 |
| 5932771 | Carbonyl compounds | Ulf-Armin Schaper, Volker Porrmann, Werner Faber, Theo Ten Pierik | 1999-08-03 |
| 5811560 | Process for the production of 8.alpha., 12-oxido-13, 14,15,16-tetranorlabdane | Georg Knuebel, Andreas Bomhard | 1998-09-22 |
| 5688976 | Process for the production of 8 .alpha., 12-oxido-13,14,15,16-tetranorlabdane | Georg Knuebel, Andreas Bomhard, Ulf-Armin Schaper, Theo Stalberg | 1997-11-18 |
| 5670670 | Process for the production of 8 .alpha., 12-oxido-13,14,15,16-tetranorlabdane | Georg Knuebel, Andreas Bomhard, Ulf-Armin Schaper, Theo Stalberg | 1997-09-23 |