Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4927726 | Photoreceptor with polynuclear bisoxazole or bisthizole | Michael Scozzafava, Ching W. Tang | 1990-05-22 |
| 4921637 | Naphthoquinone derivatives | Teh-Ming Kung, William B. Vreeland | 1990-05-01 |
| 4913996 | Electrophotographic elements containing certain anthraquinone derivatives as electron-transport agents | Teh-Ming Kung, William B. Vreeland | 1990-04-03 |
| 4909966 | Naphthoquinone derivatives | Teh-Ming Kung, William B. Vreeland | 1990-03-20 |
| 4877699 | Electrophotographic luminescent amplification process | John W. May | 1989-10-31 |
| 4869984 | Electrophotographic elements containing certain naphthoquinone derivatives as electron-transport agents | Teh-Ming Kung, William B. Vreeland | 1989-09-26 |
| 4869985 | Electrophotographic elements containing certain naphthoquinone derivatives as electron-transport agents | Teh-Ming Kung, William B. Vreeland | 1989-09-26 |
| 4442193 | Photoconductive compositions and elements containing naphthalene bis-dicarboximide compounds | Chin H. Chen, Michael Scozzafava | 1984-04-10 |