Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5284511 | Conditioning process for phthalocyanine pigments | Abdul Sattar | 1994-02-08 |
| 5194626 | Metal complex pigments of azines | Bernd Kaletta | 1993-03-16 |
| 5162518 | Heterocyclic compounds and porphyrin compounds obtainable therefrom | Bernd Kaletta, Walther Wolf, David R. Terrell | 1992-11-10 |
| 5128267 | Naphthotriazolium salts | Jürgen Köcher, Klaus Wehling | 1992-07-07 |
| 5091532 | Process for the preparation of pigments based on isoindole | Bernd Kaletta | 1992-02-25 |
| 4721745 | Pigments based on metal complexes | Rutger Neeff, Walter Muller | 1988-01-26 |
| 4709019 | Anthraquinone-azo pyridone-containing compounds | Rutger Neeff, Walter Muller | 1987-11-24 |
| 4666526 | Azine pigments, processes for their preparation, and their use | Rutger Neeff | 1987-05-19 |
| 4628093 | Red nickel azine pigment | Rutger Neeff, Walter Muller | 1986-12-09 |
| 4614547 | Azine pigments | Rutger Neeff, Walter Muller | 1986-09-30 |
| 4564680 | Isoindolazines | Rutger Neeff, Walter Muller, Volker Hederich | 1986-01-14 |
| 4435589 | Process for the preparation of dimethyl succinylosuccinate, the disodium salt thereof, dianilinodihydroterephthalic acids, the dimethyl esters and salts thereof, and dianilinoterephthalic acids, and the dimethyl esters and salts thereof | Detlef-Ingo Schutze, Rutger Neeff, Hans-Volker Runzheimer | 1984-03-06 |
| 4389215 | Anthraquinone-azomethine compounds, processes for their preparation and processes for dyeing synthetic fibre materials and for pigmenting organic macromolecular substances | Rutger Neeff, Walter Muller | 1983-06-21 |
| 4323670 | Anthraquinone-azomethine compounds, processes for their preparation and processes for pigmenting organic macromolecular substances | Rutger Neeff, Walter Muller | 1982-04-06 |
| 4323671 | Anthraquinone derivatives, processes for their preparation, processes for pigmenting organic macromolecular substances, and pigmented organic macromolecular material | Rutger Neeff, Walter Muller | 1982-04-06 |
| 4319025 | Anthraquinone-azomethine compounds, processes for their preparation and processes for dyeing synthetic fibre materials and for pigmenting organic macromolecular substances | Rutger Neeff, Walter Muller | 1982-03-09 |
| 4309221 | Anthraquinone derivatives | Rutger Neeff, Walter Muller | 1982-01-05 |
| 4288362 | Monoazo pigments containing a quinazo linonylacetoacetanilide coupling component | Rutger Neeff, Walter Muller | 1981-09-08 |
| 4284411 | Anthraquinone derivatives for pigmenting organic macromolecular substances | Rutger Neeff, Walter Muller | 1981-08-18 |
| 4260540 | Azo dye pigments containing 4-quinazolinone moieties | Rutger Neeff, Walter Muller | 1981-04-07 |
| 4246401 | Axomethine pigments | Rutger Neeff, Walter Muller | 1981-01-20 |
| 4225489 | Heterocyclic azo dyes and pigments containing 4-quinazolinone moieties | Rutger Neeff, Walter Muller | 1980-09-30 |