Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5360902 | Process for producing methyl hydroxyalkyl cellulose ethers | Oke Brauer, Bernd Haase, Lutz Riechardt, Gerd Sonnenberg, Dietrich Tegtmeier | 1994-11-01 |
| 5001232 | Carboxymethylsulphoethyl celluloses and a process for their preparation | Klaus Balser, Klaus Szablikowski | 1991-03-19 |
| 4990609 | Sulfoethyl cellulose of high solution quality and a process for its production | Klaus Balser, Klaus Szablikowski | 1991-02-05 |
| 4972007 | Use of cellulose derivatives in drilling fluids | Bernd Schriewer | 1990-11-20 |