Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4755358 | Fluidized bed apparatus for the treatment of fluidized carbon black with gases | Richard Engel | 1988-07-05 |
| 4698913 | Apparatus and continuous method for the multistage treatment of finely divided solid substances with gases | — | 1987-10-13 |
| 4676200 | Method for use dependent complete evaporation of liquid nitrogen oxide | Richard Engel | 1987-06-30 |
| 4647444 | Method for the treatment of fluidized carbon black utilizing level sensing means | Richard Engel | 1987-03-03 |
| 4439401 | Process and apparatus for the production of carbon black | Lothar Rothbuhr, Gerhard Kuhner | 1984-03-27 |
| 4435378 | Process for removing extractable substances from carbon black | Reinhold Reck, Gerhard Kuhner, Peter Kleinschmit | 1984-03-06 |
| 4434135 | Gas black burner | Peter Kleinschmit, Richard Engel | 1984-02-28 |
| 4366138 | Carbon black useful for pigment for black lacquers | Edith Eisenmenger, Richard Engel, Gerhard Kuhner, Reinhold Reck, Hans Schaefer | 1982-12-28 |
| 4228131 | Apparatus for the production of carbon black | Lothar Rothbuhr | 1980-10-14 |