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Method for producing phthalic anhydride that conforms to specifications |
Matthias Kummer, Marcus Bechtel |
2009-11-17 |
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Method for the purification of dimethylacetamide (DMAc) |
Hartmut Schoenmakers, Klaus Althaus, Tanja Kirchner, Hartmut Staatz |
2009-06-16 |
| 6943274 |
Method for the production of cyclohexanol from benzene |
Till Adrian, Harald Rust, Arnd Bottcher, Thomas Hill, Ulrich Müller +1 more |
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| 6696610 |
Continuous preparation of monoethanolamine, diethanolamine and triethanolamine |
Axel Hildebrandt, Bernd Bessling |
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| 6570026 |
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Method for the continuous production of methoxyamine hydrochloride |
Frank Heimann, Bernd Bartenbach, Horst Hartmann, Michael Keil, Josef Wahl |
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| 5048396 |
Bypass valve |
Heinz Torkler |
1991-09-17 |
| 4862691 |
Pump drive speed regulator with control-pressure-generating valve having spring biased by cam face on load directional control valve |
— |
1989-09-05 |
