Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5744010 | Process for the preparation of the non-toxic salts of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one 2,2-dioxide and arrangement for carrying out this process | Gunter Roscher, Heinz Litterer, Wolf-Dietmar Kaufmann, Bernd Laugwitz, Hans-Dietmar Schnabel | 1998-04-28 |
| 4566999 | Process for the preparation of acid dyestuffs of low electrolyte content of the triphenylmethane series | — | 1986-01-28 |