Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6926768 | Treatment of high performance pigments | Kevin A. Arthur, George H. Robertson, Stanislav G. Vilner, Ronald R. Forbes | 2005-08-09 |
| 6476222 | Preparation of heat stable pigment violet 23 | Norman W. Smith, Terrence R. Chamberlain, Barbara N. Berg, Russell Schwartz | 2002-11-05 |
| 6471764 | Treatment of high performance pigments with etheramine dispersing salts | George H. Robertson, Kevin A. Arthur, Russell Schwartz, Stanislav G. Vilner | 2002-10-29 |
| 4448607 | Conditioning crude phthalocyanine pigments | Steven L. Johnson, George H. Robertson | 1984-05-15 |