Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5096458 | Preparation of stable anionic dyestuff solutions: pressure permeation of crude dye in solution of lithium or ammonium salt | Martin Michna, Dietrich Tegtmeyer | 1992-03-17 |