| 5266451 |
Color photographic recording material |
Arno Schmuck, Manfred Peters, Wolfgang Schmidt |
1993-11-30 |
| 5077183 |
Color photographic recording material and a process for the preparation of a photographic silver halide emulsion |
Helmut Reuss, Bruno Mucke |
1991-12-31 |
| 5006455 |
Gradation-variable black-and-white paper |
Walter Patzold |
1991-04-09 |
| 4987063 |
Gradation variable black- and -white paper |
Walter Patzold, Gunther Mahlberg |
1991-01-22 |
| 4883880 |
Process for the preparation of sulfoalkyl quaternary salts and for the production of alkane sultones |
Wolfgang Himmelmann |
1989-11-28 |
| 4636460 |
Photographic recording material and process for the production of photographic images |
Heinz Meckl, Helmut Haseler |
1987-01-13 |
| 4576907 |
Color-photographic recording material |
Hans Langen, Erwin Ranz |
1986-03-18 |
| 4543308 |
Photographic recording process |
Hans-Joachim Schumann, Hans hlschlager |
1985-09-24 |
| 4539408 |
Process for the preparation of sulphoalkyl quaternary salts |
Marie Hase, Max Glass |
1985-09-03 |
| 4504668 |
Process for the preparation of N-sulfoalkyl quaternary salts of nitrogen heterocyclics |
Marie Hase, Max Glass |
1985-03-12 |
| 4483799 |
Hydroxy alkane sulfonic acid sulfoalkyl esters |
Detlef Wendisch, Marie Hase |
1984-11-20 |
| 4308390 |
Process for the production of sulphoalkyl quaternary salts |
Max Glass |
1981-12-29 |