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Rudolf Helm
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Bergisch Gladbach, DE
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last 30 patents
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Patent Grant
Process for preparing 2,2'-dinitrodiphenyl disulphide
Patent number
5,502,256
Issue date
Mar 26, 1996
Bayer Aktiengesellschaft
Ferdinand Hagedorn
C07 - ORGANIC CHEMISTRY
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Patent Grant
Process for the preparation of a mixture of low-molecular weight po...
Patent number
4,400,560
Issue date
Aug 23, 1983
Bayer Aktiengesellschaft
Roland Richter
C07 - ORGANIC CHEMISTRY