Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6465041 | Method of making gas diffusion layers for electrochemical cells | Joseph Frisk, Wayne Boand | 2002-10-15 |
| 6432571 | Membrane electrode assemblies | Mark K. Debe, William V. Balsimo, Andrew J. Steinbach, Raymond J. Ziegler | 2002-08-13 |
| 6428584 | Membrane electrode assemblies | Mark K. Debe, William V. Balsimo, Andrew J. Steinbach, Raymond J. Ziegler | 2002-08-06 |
| 6381308 | Device for coupling hearing aid to telephone | Charles H. Cargo, Gerald P. Mill | 2002-04-30 |