Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7578458 | Method and device for grinding cellulose | — | 2009-08-25 |
| 4526961 | Process for etherifying cellulose with alkyl monochloroacetates | Utz-Hellmuth Felcht | 1985-07-02 |
| 4501887 | Preparing cellulose ethers in a dimethoxyethane/(dispersing auxiliary) medium | Wolfgang Kornrumpf, Josef Hilbig, Utz-Hellmuth Felcht | 1985-02-26 |
| 4460766 | Dispersing auxiliary for preparing cellulose ethers | Utz-Hellmuth Felcht | 1984-07-17 |
| 4454045 | Process for purification of mixtures containing water, salts, glycolate ions and organic solvents | — | 1984-06-12 |
| 4337328 | Acrylic polymers having a high swellability in water | Arno Holst, Gerhard Buchberger | 1982-06-29 |
| 4316982 | Process for reducing the viscosity of cellulose ethers by means of ozone and application thereof | Arno Holst | 1982-02-23 |