Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5493011 | Monoazo or disazo pigments based on (benoxazol-2-yl)- or (benzimidazol-2-yl)-arylacetamides | Rudiger Jung | 1996-02-20 |
| 5100989 | Resin acid esters based on novolak oxyalkylates, their preparation and their use | Heinz Uhrig, Erich Ackermann | 1992-03-31 |
| 5026831 | Water-insoluble disazo colorants having hetero-bicyclic methylene-active compounds as coupling component | Rudiger Jung | 1991-06-25 |
| 5008442 | Surface-active compounds on the basis of arylated fatty substances and their use | Heinz Uhrig, Klaus Ehl | 1991-04-16 |
| 4957841 | Specifically influencing the triboelectric effect of azo pigments | Hans-Tobias Macholdt, Alexander Sieber, Franz Schui | 1990-09-18 |
| 4939238 | Nitrogen-containing condensation products based on unmodified or modified natural resins, process for the preparation thereof and the use thereof | Heinz Uhrig, Siegfried Schwerin | 1990-07-03 |
| 4828622 | Process for preparing highly concentrated aqueous press cakes of solids | Joachim Weide, Erwin Dietz | 1989-05-09 |
| 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, Erwin Dietz | 1988-11-15 |
| 4729796 | Process for preparing pigment granules from aqueous suspension of pigment and alkaline solution of resin | Christa Uhde nee Schilling, Werner Marx | 1988-03-08 |
| 4719292 | .beta.-modified crystalline red pigment | Franz Schui, Norbert Wester | 1988-01-12 |
| 4597906 | Surface-active compounds on the basis of arylated fatty substances and their use | Heinz Uhrig, Klaus Ehl | 1986-07-01 |
| 4543380 | Pigment formulation, a process for its preparation, and its use | Manfred Schneider, Manfred Zimmermann | 1985-09-24 |
| 4474609 | Recrystallization-resistant monoazo pigment mixtures of high tinctorial strength, process for their preparation and their use | Klaus Ehl | 1984-10-02 |
| 4469516 | Pigment preparations; process for their manufacture and their use | Manfred Schneider, Rainer Schunck | 1984-09-04 |
| 4450304 | Polyether dispersants | Helmut Diery, Joachim Weide | 1984-05-22 |
| 4403077 | Anionic compounds based on modified novolak oxyalkylates, their _preparation, and their use as foam-free surface-active agents | Heinz Uhrig, Joachim Weide | 1983-09-06 |
| 4341716 | Polyether polyamines, the salts thereof, process for their manufacture and their use | Helmut Diery, Wolfgang Wagemann, Joachim Weide, Martin Hille | 1982-07-27 |
| 4333732 | Dyestuff preparations containing oxalkylates of modified natural rosin acids | Konrad Opitz, Hubert Kruse, Manfred Schneider, Heinz Uhrig | 1982-06-08 |
| 4323396 | Process for the preparation of pigment formulations and their use | Klaus Ehl | 1982-04-06 |
| 4297270 | Manufacture and use of non-ionogenic interface-active agents based on modified rosins | Heinz Uhrig | 1981-10-27 |
| RE30650 | Dispersing and stabilizing agents for dyestuffs | Helmut Diery, Wolfgang Klinner, Karl-Hermann List, Heinz Uhrig | 1981-06-16 |
| 4214872 | Dispersing agents for finely dividing and stabilizing dyestuffs, pigments and optical brighteners as well as the dispersions thereby obtained | Heinz Uhrig, Karl-Hermann List | 1980-07-29 |