Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5683842 | Unsymmetrical perylene dimers in electrophotography | James M. Duff, C. Geoffrey Allen, Gordon K. Hamer | 1997-11-04 |
| 5668276 | Hydroxygallium phthalocyanine processes | Cheng-Kuo Hsiao, Sandra J. Gardner, Roger E. Gaynor, Jacques Poitras | 1997-09-16 |
| 5645965 | Symmetrical perylene dimers | James M. Duff, Charles G. Allen, Gordon K. Hamer | 1997-07-08 |