Paul Riegger

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Troisdorf, DT

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Patents Grantslast 30 patents

Information Patent Grant
Method of preparing terephthalic acid dichloride and isophthalic ac...
- Patent number 4,091,017
- Issue date May 23, 1978
- Dynamit Nobel Aktiengesellschaft
- Hermann Richtzenhain
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of .alpha.,.alpha.,.alpha..alpha.',.alp...
- Patent number 4,056,454
- Issue date Nov 1, 1977
- Dynamit Nobel Aktiengesellschaft
- Paul Riegger
- C07 - ORGANIC CHEMISTRY