Friedhelm Geiger

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Hanau, DT

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Patents Grantslast 30 patents

Information Patent Grant
Process for the production of alkyl sulfonic acids
- Patent number 4,052,445
- Issue date Oct 4, 1977
- Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
- Gerd Schreyer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of finely divided solid cyanuric chloride
- Patent number 4,038,276
- Issue date Jul 26, 1977
- Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
- Friedhelm Geiger
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of cyanogen chloride and hydrogen chloride
- Patent number 3,961,023
- Issue date Jun 1, 1976
- Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
- Friedhelm Geiger
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for preparing pure chlorine
- Patent number 3,957,950
- Issue date May 18, 1976
- Friedhelm Geiger
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the production of cyanogen chloride
- Patent number 3,949,060
- Issue date Apr 6, 1976
- Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
- Friedhelm Geiger
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the purification of cyanogen chloride
- Patent number 3,947,552
- Issue date Mar 30, 1976
- Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
- Friedhelm Geiger
- C01 - INORGANIC CHEMISTRY