Rolf H. Joest

Follow

Person

Duisburg, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Pitch from coal tar pitch, method of its production, as well as app...
- Patent number 5,128,021
- Issue date Jul 7, 1992
- Bergwerksverband GmbH
- Ingo Romey
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...