Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7682738 | Lead acid battery with gelled electrolyte formed by filtration action of absorbent separators and method for producing it | Antonio Luiz Silva Ferreira, George C. Zgruis | 2010-03-23 |
| 7097939 | Gel-forming battery separator | Anthony L. Ferreira, Wai Ming Choi | 2006-08-29 |
| 6780226 | Charge stabilized electret filter media | Richard E. Gahan, Graham C. Stevens | 2004-08-24 |
| 5645627 | Charge stabilized electret filter media | Richard E. Gahan, Graham C. Stevens | 1997-07-08 |
| 4184282 | Padded jaw animal trap | — | 1980-01-22 |