Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10427077 | Collapsible pleated filter using laterally positioned retaining members | — | 2019-10-01 |
| 10124317 | Apparatus and method for avoiding fluid bypass in particulate filters | — | 2018-11-13 |
| 9943796 | Multi layer pleatable filter medium | Thaddeus J. Ptak, Chrystal B. Gillilan | 2018-04-17 |
| 8343251 | Composite filter media | Thaddeus J. Ptak | 2013-01-01 |
| 8182571 | Frame for receiving a filter element and method for providing | Ammar Kailani | 2012-05-22 |
| 8105425 | Air filter formed by slit and expanded layers of electrostatically enhanced material | Thaddeus J. Ptak, Chrystal B. Gillilan | 2012-01-31 |
| 7951229 | Air filter formed from slit and expanded layers of electrostatically enhanced material | Thaddeus J. Ptak, Chrystal B. Gillilan | 2011-05-31 |
| 7135051 | Dirt cup filter with pre-filtration cap | Danny Lamer | 2006-11-14 |
| D495458 | Filter cup assembly for a vacuum cleaner | Danny Lamer | 2004-08-31 |
| D495105 | Filter cup assembly for a vacuum cleaner | Danny Lamer | 2004-08-24 |