Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D398046 | Combined filter element and frame therefor | Gary R. Gillingham, Bernard A. Matthys, Daniel T. Risch | 1998-09-08 |
| 5792247 | Integrated resonator and filter apparatus | Gary R. Gillingham, Daniel T. Risch, Wayne M. Wagner, Bernard A. Matthys, Edward A. Steinbrueck | 1998-08-11 |
| D396098 | Conical filter | Gary R. Gillingham, Wayne M. Wagner, Daniel T. Risch, Jim C. Rothman, Steven A. Carter | 1998-07-14 |
| 5772883 | Slanted inline filter | Jim C. Rothman, Gary R. Gillingham, Wayne M. Wagner, Daniel T. Risch, Fred H. Wahlquist +1 more | 1998-06-30 |
| 5454858 | Process of using mist collector cartridge | Mervin E. Wright, Timothy H. Grafe, James A. LeBlanc | 1995-10-03 |
| 5415676 | Mist collector cartridge | Mervin E. Wright, Timothy H. Grafe, James A. LeBlanc | 1995-05-16 |
| 4946484 | Support for clean room ceiling grid system | Donald R. Monson, James A. LeBlanc | 1990-08-07 |
| 4819549 | End seal for clean room ceiling supports | Gary R. Gillingham | 1989-04-11 |
| 4647373 | Multi-layered filter apparatus | William J. Krisko | 1987-03-03 |
| 4491460 | Air cleaner and deflecting intake tube | — | 1985-01-01 |
| 4243397 | Air cleaner with replaceable filter element | Frank A. Janezich | 1981-01-06 |
| 4211543 | Air cleaner with replaceable filter element | Frank A. Janezich | 1980-07-08 |