Gerhard Wickenhaeuser

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Birkenheide, DE

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Patents Grantslast 30 patents

Information Patent Grant
Recovery of aqueous glyoxylic acid solutions
- Patent number 4,902,828
- Issue date Feb 20, 1990
- BASF Aktiengesellschaft
- Gerhard Wickenhaeuser
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Purification of aqueous glyoxal solutions
- Patent number 4,521,632
- Issue date Jun 4, 1985
- BASF Aktiengesellschaft
- Gerhard Wickenhaeuser
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Conditioning of finely divided crude organic pigments
- Patent number 4,451,654
- Issue date May 29, 1984
- BASF Aktiengesellschaft
- Fritz Graser
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for drying finely divided pigments
- Patent number 4,368,582
- Issue date Jan 18, 1983
- BASF Aktiengesellschaft
- Fritz Graser
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...