Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5041646 | Process for producing 2-methyl-2-butenoic acid | — | 1991-08-20 |
| 4948780 | Alcohols and ethers having cyclododecyl and cyclododecenyl groups, process for their preparation and scents containing same | Walter Hafner, Erich Markl, Marlies Regiert | 1990-08-14 |
| 4863723 | Method for preparing hexamethylcyclotrisiloxane and uses for the same | Franz-Heinrich Kreuzer | 1989-09-05 |
| 4849401 | Alcohols containing 2-methylphenyl or 2-methoxyphenyl groups, and fragrances containing same | Wilhelm Friedrich, Walter Hafner, Marlies Regiert | 1989-07-18 |
| 4842853 | Solid which releases a fragrant substance and/or a disinfectant | Franz-Heinrich Kreuzer | 1989-06-27 |
| 4766107 | 16-Oxa-bicyclo-[13.1.0]-hexadec-7-ene and its application as a fragrance | Hans-Jurgen Eberle | 1988-08-23 |
| 4710316 | Aldehydes, acetals, alcohols and ethers having 3-methyl- or 3,5-dimethyl-benzyl groups, their manufacture and perfume materials containing same | Walter Hafner, Peter Ritter, Marlies Regiert | 1987-12-01 |
| 4704477 | Trimethylcyclohexene derivatives, their preparation and use as perfume substances | Hans Mehlin, Marlies Regiert | 1987-11-03 |
| 4647406 | 2-ethyl-2-prenyl-3-hexenol its preparation and use as a fragrant | Hans Mehlin | 1987-03-03 |
| 4631146 | Alpha-tertiary dimethylacetals and their use as fragrant substances | Marlies Regiert | 1986-12-23 |
| 4625046 | Alpha-tertiary nitriles | — | 1986-11-25 |
| 4620023 | Method for preparing hexamethylcyclotrisiloxane and uses for the same | Franz-Heinrich Kreuzer | 1986-10-28 |
| 4496748 | Substituted macrobicyclic ethers, the manufacture and use thereof | — | 1985-01-29 |
| 4385185 | .beta.-.gamma.-Unsaturated ketones and isoprenoid 2,6 diones, a process for producing the same and their use as fragrant and flavoring substances | Walter Hafner | 1983-05-24 |
| 4380675 | 2,4-Dialkyl-2,6-heptadienal derivatives, a process for their preparation, and fragrant and flavoring products made therewith | Walter Hafner | 1983-04-19 |