Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4366138 | Carbon black useful for pigment for black lacquers | Edith Eisenmenger, Richard Engel, Reinhold Reck, Hans Schaefer, Manfred Voll | 1982-12-28 |
| 4366139 | Process for the production of water containing carbon black preparations | Wilhelm Berndt, Lothar Rothbuhr, Hans Wagner | 1982-12-28 |