| 6472566 |
Apparatus for the preparation of formaldehyde from methanol |
Elke Schweers, Thomas Kaiser, Michael Haubs |
2002-10-29 |
| 6414196 |
Process and device for preparing pure formaldehyde |
Werner Sievers, Elke Schweers |
2002-07-02 |
| 6388102 |
Process for the preparation of trioxane and polyoxymethylene copolymers |
Elke Schweers, Thomas Kaiser, Michael Haubs |
2002-05-14 |
| 6362305 |
Method for producing formaldehyde from methanol |
Elke Schweers, Thomas Kaiser, Christine Meister, Rolf Schulz |
2002-03-26 |
| 6339175 |
Process for the non-oxidative preparation of formaldehyde from methanol |
Elke Schweers, Thomas Kaiser, Michael Haubs |
2002-01-15 |
| 6201136 |
Separation of liquid mixtures comprising formaldehyde, trioxane, alcohol and hemiformal |
Albert Reichl, Michael Kleiber, Dirk Scheid, Dieter Sommerfeld, Wolfgang Nickelfeld |
2001-03-13 |
| 4857060 |
Protective device for hypodermic needle |
— |
1989-08-15 |