Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879380 | Process for conditioning crude polyhalogenated pigments using a heterocyclic organic solvent | John Henry Banties | 1989-11-07 |
| 4859770 | Process for making alpha-phase phthalocyanine blue pigment comprising substantially 100 percent isometric crystals | Timothy G. Leary, Arvind S. Patil | 1989-08-22 |
| 4853039 | Process for making a phthalocyanine pigment dispersion | John H. Bantjes, Timothy G. Leary | 1989-08-01 |