Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5935284 | Filter cartridge | Joseph C. Tokar, Timothy H. Grafe, James A. LeBlanc | 1999-08-10 |
| 5871557 | Mist collector cartridge | Joseph C. Tokar, Timothy H. Grape, James A. LeBlanc | 1999-02-16 |
| 5454858 | Process of using mist collector cartridge | Joseph C. Tokar, Timothy H. Grafe, James A. LeBlanc | 1995-10-03 |
| 5415676 | Mist collector cartridge | Joseph C. Tokar, Timothy H. Grafe, James A. LeBlanc | 1995-05-16 |
| 5246472 | Apparatus for filtering engine exhaust | John T. Herman, Wayne M. Wagner, Bruce Hoppenstedt, James A. LeBlanc | 1993-09-21 |
| 4615804 | High density pleat spacing and scoring tool and filter made therewith | — | 1986-10-07 |
| 4512891 | Pleated filter element with controlled expansibility and frame therefor | Donald D. Gronholz | 1985-04-23 |
| 4452619 | Pleated filter element having integral pleat spacers | Sheila C. Peyraud, Bradley B. Nielsen | 1984-06-05 |
| 4304580 | Air cleaner with suspended cartridge | Warren Gehl | 1981-12-08 |