Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5174923 | Cyclic phosphazene and salt antistatic composition | Janglin Chen, Wayne T. Ferrar, Hans R. Grashof | 1992-12-29 |
| 4971897 | Photographic silver halide element containing cyclic phosphazene and salt antistatic composition | Janglin Chen, Wayne T. Ferrar, Hans R. Grashof | 1990-11-20 |
| 4948720 | Photographic element containing polyphosphazene antistatic composition | Janglin Chen, Wayne T. Ferrar, James E. Kelly | 1990-08-14 |