Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6569563 | Air depolarized electrochemical button cell | John David Burns, John Edward Oltman | 2003-05-27 |
| 6284400 | Metal-air cathode can, and electrochemical cell made therewith | Robert B. Dopp, John Edward Oltman | 2001-09-04 |
| 6205831 | Method for making a cathode can from metal strip | John David Burns, John Edward Oltman | 2001-03-27 |
| 6040074 | Metal-air cathode can, and electrochemical cell made therewith | Robert B. Dopp, John Edward Oltman | 2000-03-21 |