Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889219 | Method and apparatus for the receiving of carbon black pellets for weighing prior to injection into a mixer which inhibits the accumulation of carbon black fines on internal surfaces | — | 1989-12-26 |
| 4834647 | Method and apparatus for conveying carbon black which inhibits the build-up of carbon black fines on conveying surfaces | — | 1989-05-30 |