Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6143394 | Nonwoven sorbent manhole apron | Gulshan Chhabra | 2000-11-07 |
| 5886306 | Layered acoustical insulating web | Gulshan Chhabra | 1999-03-23 |
| 5529828 | Enhancement of electromagnetic barrier properties | John R. Pennace | 1996-06-25 |
| 5310576 | Enhancement of electromagnetic barrier properties | John R. Pennace | 1994-05-10 |
| 5211997 | Enhancement of electromagnetic barrier properties | John R. Pennace | 1993-05-18 |