Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4551495 | Weather-resistant polyamides | Bert Brassat, Hans-Josef Buysch, Heinrich Haupt | 1985-11-05 |
| 4550133 | Stabilized red phosphorus and its use for flameproofing thermoplastic polyamide moulding compositions | Werner Nielinger, Dietrich Michael | 1985-10-29 |
| 4472338 | Method of producing polyamide foils | Helmut Schulte, Werner Nielinger, Dietrich Michael | 1984-09-18 |
| 4465821 | Process for the continuous production of polyamides | Werner Nielinger, Wolfgang Alewelt | 1984-08-14 |
| 4426475 | Stabilized polyamides | Bert Brassat, Hans-Josef Buysch, Heinrich Haupt | 1984-01-17 |
| 4348495 | Phosphorous acid esters and their use for stabilizing polyamides | Hans-Josef Buysch, Bert Brassat, Erich Eimers | 1982-09-07 |
| 4340540 | Preparation of basic triarylmethane dyestuffs | — | 1982-07-20 |
| 4330476 | Preparation of cationic triarylmethane dyestuffs | — | 1982-05-18 |
| 4318859 | Process for the preparation of basic dyestuffs | — | 1982-03-09 |
| 4277396 | Thiazolediazacyanine dyestuffs | Hans-Lothar Dorsch | 1981-07-07 |
| 4252750 | Cyclic phosphorous acid esters | Hans-Josef Buysch, Bert Brassat, Erich Eimers | 1981-02-24 |
| 4247470 | Process for isolating triarylmethane dyestuffs | Hans-Lothar Dorsch | 1981-01-27 |
| 4211716 | Process for isolating triarylmethane dyestuffs | Hans-Lothar Dorsch | 1980-07-08 |