Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4647676 | Process for the isolation of 2,2-dimethyl-7-hydroxy-coumaran | Manfred Lenthe, Udo Allenbach, Gerhard Buttner | 1987-03-03 |
| 4486611 | Isolation of dihydroxybenzene-monoethers from reaction mixtures | Manfred Lenthe, Udo Allenbach, Gerhard Buttner | 1984-12-04 |
| 4321204 | Preparation of certain 2-methyl-2,3-dihydro-benzofuran-7-ols | Gerhard Buttner, Manfred Lenthe, Udo Allenbach | 1982-03-23 |