Werner Sroka

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Bruhl, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for the production of high quality carbon black
- Patent number 4,282,198
- Issue date Aug 4, 1981
- Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
- Lothar Rothbuhr
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the control of the ratio DBP number/DBP number after pr...
- Patent number 4,238,199
- Issue date Dec 9, 1980
- Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
- Lothar Rothbuhr
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the production of high quality carbon black forming mat...
- Patent number 4,225,416
- Issue date Sep 30, 1980
- Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
- Lothar Rothbuhr
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the production of high qualtiy carbon black
- Patent number 4,154,808
- Issue date May 15, 1979
- Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
- Lothar Rothbuhr
- C01 - INORGANIC CHEMISTRY