| 4725690 |
Perylene-3,4,9,10-tetracarboxylic acid diimide dye |
— |
1988-02-16 |
| 4667417 |
Preparation of aerogels |
Andreas Stange |
1987-05-26 |
| 4517270 |
Electrophotographic recording medium |
Gerhard Hoffmann, Reinhold J. Leyrer, Peter Neumann, Manfred Patsch |
1985-05-14 |
| 4451654 |
Conditioning of finely divided crude organic pigments |
Gerhard Wickenhaeuser |
1984-05-29 |
| 4450273 |
NN' Para methoxy benzyl perylene-3,4,9,10-tetracarboxylic acid diimide |
— |
1984-05-22 |
| 4446324 |
Perylenetetracarboxylic acid diimides and their use |
— |
1984-05-01 |
| 4429029 |
Organic electrophotographic recording medium |
Gerhard Hoffmann, Reinhold J. Leyrer |
1984-01-31 |
| 4419427 |
Electrophotographic medium with perylene-3,4,9,10-tetracarboxylic acid N,N'-bis-(2',6'-dichlorophenyl)-diimide |
Gerhard Hoffmann, Reinhold J. Leyrer, Peter Neumann |
1983-12-06 |
| 4379934 |
Process for two-dimensionally concentrating light, and novel perylene-3,4,9,10-tetracarboxylic acid diimides |
Guenther Seybold |
1983-04-12 |
| 4368582 |
Process for drying finely divided pigments |
Gerhard Wickenhaeuser |
1983-01-18 |
| 4262851 |
Process for converting crude and/or coarsely crystalline perylenetetracarboxylic acid diimides to a pigmentary form |
Paul Guenthert |
1981-04-21 |
| 4240793 |
Preparation of a high-hiding and deeply colored pigmentary form of perylene-3,4,9,10-tetracarboxylic acid bis-(4'-ethoxyphenyl)-imide |
— |
1980-12-23 |
