Issued Patents All Time
Showing 51–67 of 67 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5055580 | Substituted polycylic derivatives of the 9-oxo-1,9a,10-triaza-9-hydroanthracene and method for coloring of native or synthetic materials | Frank Prokschy | 1991-10-08 |
| 5035747 | Mixed crystal pigments of the anthanthrone series, and preparation and use thereof | Manfred Urban | 1991-07-30 |
| 4986852 | Pigments and use thereof | Gustav Kapaun, Michael Kappert, Frank Prokschy, Adolf Kroh, Manfred Urban | 1991-01-22 |
| 4986851 | Pigment dispersions, processes for their preparation and their use | Albert Munkel, Ferdinand Memmel | 1991-01-22 |
| 4960935 | Bisphenol derivatives, process for their manufacture, and their use as surfactants | Erich Hoffmann, Joachim Weide | 1990-10-02 |
| 4939193 | Use of the alpha-modification of cis-naphthoylenebis(benzimidazole) for pigmenting polyolefins | Siegfried Schiessler | 1990-07-03 |
| 4937345 | Process for the preparation of 2-(arylamino)-3-carboxy-9(10H)-acridones | Heinrich Hamal, Frank Prokschy | 1990-06-26 |
| 4881980 | Pigments of the quinacridonequinone series, processes for their preparation and their use | Frank Prokschy | 1989-11-21 |
| 4828622 | Process for preparing highly concentrated aqueous press cakes of solids | Joachim Weide, Reinhold Deubel | 1989-05-09 |
| 4812143 | Liquid formulations of disperse dyestuffs containing inorganic oxides or silicates for dyeing textile materials | Klaus Hofmann, Ulrich Buhler | 1989-03-14 |
| 4785082 | Process for preparing a highly concentrated aqueous press cakes of an azo disperse dye from dilute aqueous suspension thereof wherein surfactant is added before the dye is isolated | Joachim Weide, Reinhold Deubel | 1988-11-15 |
| 4631330 | Addition compounds and process for their preparation | Albert Munkel, Otmar Hafner, Wolfgang Rieper, Adolf Kroh | 1986-12-23 |
| 4451656 | Imidazoline addition compounds | Albert Munkel | 1984-05-29 |
| 4443263 | Solids dispersions which can be easily distributed in hydrophobic and hydrophilic media and are stable to flocculation, and their use | Michael Maikowski, Robert Gutbrod | 1984-04-17 |
| 4369270 | Pigment dispersions and use thereof | Max Grossmann, Michael Maikowski | 1983-01-18 |
| 4219365 | Pigment dispersions and their use for the pigmenting of hydrophilic and hydrophobic media | Max Grossmann, Robert Gutbrod, Michael Maikowski | 1980-08-26 |
| 4217265 | Pigment preparations | Otto Fuchs, Robert Gutbrod, Adolf Kroh, Michael Maikowski | 1980-08-12 |