Hermann Burkhard

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Neu-Allschwil, CH

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Patents Grantslast 30 patents

Information Patent Grant
Azo dyes having a 6-hydroxy-pyridone-2 coupling component radical h...
- Patent number 4,140,684
- Issue date Feb 20, 1979
- Fidelity Union Trust Company, Executive Trustee Under the Sandoz Trust
- Hermann Burkhard
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Diazo compounds containing two optionally substituted-5-arylazo-6-h...
- Patent number 4,083,842
- Issue date Apr 11, 1978
- Sandoz Ltd.
- Hermann Burkhard
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
1-Aminoalkylene-3-cyano-4-methyl-6-hydroxy-1,2-dihydropyrid-2-ones
- Patent number 4,032,532
- Issue date Jun 28, 1977
- Sandoz Ltd.
- Hermann Burkhard
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
3-Cyano or acyl-4-aryl-5-arylazo-6-hydroxypyridone-2 dyes
- Patent number 4,011,208
- Issue date Mar 8, 1977
- Sandoz Ltd.
- Hermann Burkhard
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
5-Arylazo-6-hydroxy-pyridone-2 dyes containing an amino or substitu...
- Patent number 3,998,803
- Issue date Dec 21, 1976
- Fidelity Union Trust Company, Executive Trustee Under the Sandoz Trust
- Hermann Burkhard
- C07 - ORGANIC CHEMISTRY