Issued Patents All Time
Showing 25 most recent of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6645286 | Iron effect pigments | Stefan Trummer, Frank Henglein, Klaus Greiwe | 2003-11-11 |
| 6589331 | Soft iron pigments | Stefan Trummer, Frank Henglein, Klaus Greiwe | 2003-07-08 |
| 6428846 | Corrosion-stable aluminum pigments and process for the production thereof | Günter Kaupp, Gunter Sommer | 2002-08-06 |
| 6287695 | Corrosion-stable aluminum pigments and process for the production thereof | Günter Kaupp, Gunter Sommer | 2001-09-11 |
| 5798147 | Process for coating and printing substrates | Erich Beck, Frank Meyer, Ulrich Poth, Karl Siemensmeyer, Claudia Sierakowski +6 more | 1998-08-25 |
| 5733658 | Luster pigments based on reduced titania-coated silicate-based platelets | Raimund Schmid, Claus Kaliba, Norbert Mronga, Helmut Schmidt, Juan Antonio Gonzalez Gomez +2 more | 1998-03-31 |
| 5710197 | Crosslinked polymer particles containing a fluorescent dye | Wolfgang Fischer, Andreas Deckers, Norbert Güntherberg, Ekkehard Jahns, Sylke Haremza +1 more | 1998-01-20 |
| 5693135 | Interference pigments containing reduced titanium oxide layers for preparing forgeryproof documents and packaging | Raimund Schmid, Norbert Mronga, Claus Kaliba, Helmut Schmidt | 1997-12-02 |
| 5624487 | Preparation of bluish luster pigments | Helmut Schmidt, Hermann Bidlingmaier, Norbert Mronga, Juan Antonio Gonzalez Gomez, Claus Kaliba +2 more | 1997-04-29 |
| 5573584 | Interference pigments for preparing forgeryproof documents | Helmut Schmidt | 1996-11-12 |
| 5501731 | Carbon-containing luster pigments | Raimund Schmid, Norbert Mronga, Helmut Schmidt | 1996-03-26 |
| 5470502 | Fluorescent pigments | Erwin Hahn, Guenther Seybold | 1995-11-28 |
| 5277711 | Mixtures useful as luster pigments | Helmut Schmidt, Norbert Mronga, Raimund Schmid | 1994-01-11 |
| 5244649 | Production of hematite pigments in the form of platelets | Christoph Schwidetzky, Norbert Mronga | 1993-09-14 |
| 5122291 | Thermal insulating material based on pigment containing silica aerogels | Bernardo Wolff, Manfred Mielke, Guenther Seybold, Jochen Fricke, Roland Caps | 1992-06-16 |
| 5039587 | Oxide-coated carriers and preparation and use thereof | Erwin Czech, Detlef Schulze-Hagenest, Franz-Ulrich Schmitt | 1991-08-13 |
| 5026429 | Metal oxide coated platelet-like organic pigments | Norbert Mronga, Gustav Bock | 1991-06-25 |
| 4978394 | Metal oxide coated aluminum pigments | Norbert Mronga | 1990-12-18 |
| 4948631 | Preparation of particularly bluish pearl luster pigments | Norbert Mronga, Ulrich Graessle | 1990-08-14 |
| 4925762 | Carrier for reprography and production of this carrier | Erwin Czech, Franz-Ulrich Schmitt, Detlef Schulze-Hagenest | 1990-05-15 |
| 4867795 | Plateletlike pigments based on iron oxide | Norbert Mronga | 1989-09-19 |
| 4851049 | Thermostable bismuth vanadate/molybdate pigments | Henning Wienand, Christoph Schwidetzky, Helmut Knittel | 1989-07-25 |
| 4840677 | Plateletlike two-phase pigment | — | 1989-06-20 |
| 4826537 | Lamellar pigments of the general formula Mn.sub.X -Al.sub.Y Fe.sub.2-(X+Y) O.sub.3 | — | 1989-05-02 |
| 4803143 | Colored single-component toners and their preparation | Erwin Czech, Franz-Ulrich Schmitt, Detlef Schulze-Hagenest | 1989-02-07 |