Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5367104 | Process for the purification of organic compounds contaminated by dissolved metal compounds | Ernst I. Leupold, Udo Dettmeier, Gustav Gimpel | 1994-11-22 |
| 4806639 | Process for the preparation of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one 2,2-dioxide and for the purification thereof | Dieter Reuschling, Adolf Linkies, Otto E. Schweikert, Karl E. Mack | 1989-02-21 |
| 4804755 | Process for the preparation of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one 2,2-dioxide and for the purification thereof | Dieter Reuschling, Adolf Linkies, Otto E. Schweikert, Karl E. Mack, Wolfgang Ebertz | 1989-02-14 |
| 4628106 | Process for the preparation of 2-hydroxy-(9H)-carbazole | Otto E. Schweikert, Werner Wykypiel, Karl E. Mack | 1986-12-09 |