Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9445160 | Legacy converter filter with extended frequency range | — | 2016-09-13 |
| 6759927 | Isolation shield assembly for electrical filters and a method of manufacturing electrical filters including same | Joseph N. Maguire, Joseph A. Zennamo, Jr., Michael Lamb | 2004-07-06 |
| 5470276 | Diffuser air outlet | Joseph G. Burnell | 1995-11-28 |
| 5202656 | Frequency shifting tuning process and filter structure | Joseph A. Zennamo, Jr. | 1993-04-13 |
| 5168251 | Quality factor improvement for filter application | Joseph A. Zennamo, Jr. | 1992-12-01 |
| 5148133 | Quality factor improvement for filter applications | Joseph A. Zennamo, Jr. | 1992-09-15 |