Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4588412 | Solid formulations of dyes which are sparingly soluble or insoluble in water | — | 1986-05-13 |
| 4500321 | Process for the preparation of concentrated fluid dye compositions | Beat Bruttel, Heinz Pfenninger, Roger Lacroix | 1985-02-19 |
| 4436523 | Process for the preparation of storage stable colorant compositions by ultrafiltration and wet milling | Peter Zbinden, Zdenek Koci | 1984-03-13 |
| 4405329 | Stable concentrated fluid formulations of metal-free dyes, process for their preparation, and their use | Heinz Abel | 1983-09-20 |
| 4322415 | Stable concentrated liquid preparations of metal complex dyes | Heinz Abel, Arthur Buhler | 1982-03-30 |