Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4439400 | Apparatus for producing carbon black | Paul J. Cheng | 1984-03-27 |
| 4368182 | Carbon black production | Paul J. Cheng | 1983-01-11 |
| 4328199 | Method for producing carbon black | Paul J. Cheng | 1982-05-04 |
| 4316876 | Apparatus for producing carbon black | Paul H. Johnson | 1982-02-23 |
| 4315901 | Process for producing carbon black | Paul J. Cheng | 1982-02-16 |
| 4308073 | Pellets of graphite and carbon black and method of producing | — | 1981-12-29 |
| 4302423 | Apparatus and method for producing carbon black | Paul J. Cheng | 1981-11-24 |
| 4285926 | Start-up of carbon black process | Paul J. Cheng | 1981-08-25 |
| 4281512 | Apparatus for reducing non-gaseous pollutants | — | 1981-08-04 |
| 4265870 | Method for producing carbon black | Paul H. Johnson | 1981-05-05 |
| 4247530 | Apparatus and method for producing carbon black | Paul J. Cheng | 1981-01-27 |
| 4228143 | Method of producing pelleted carbon black | Paul J. Cheng | 1980-10-14 |
| 4216193 | Radial secondary gas flow carbon black reaction method | John W. Vanderveen | 1980-08-05 |
| 4213957 | Carbon black production | Harold R. Hunt | 1980-07-22 |