Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4282198 | Process for the production of high quality carbon black | Lothar Rothbuhr, Walter Fritz | 1981-08-04 |
| 4238199 | Process for the control of the ratio DBP number/DBP number after pressing in the manufacture of carbon black pellets | Lothar Rothbuhr, Karl Vogel | 1980-12-09 |
| 4225416 | Process for the production of high quality carbon black forming material | Lothar Rothbuhr, Walter Fritz | 1980-09-30 |