Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6662842 | Apparatus for making melt-blown filter cartridges | Robert J. Schmitt, Steven D. Barboza, Praveen Jana, Son Nguyen, Ronald R. Gschwandtner +2 more | 2003-12-16 |
| 6342283 | Melt-blown tubular core elements and filter cartridges including the same | Robert J. Schmitt, Steven D. Barboza, Praveen Jana, Son Nguyen, Ronald R. Gschwandtner +2 more | 2002-01-29 |
| 5910229 | Apparatus and method for integrally joining preformed thermoplastic core elements especially adapted for the continuous manufacture of melt-blown filter cartridges | Robert D. Connor, Robert J. Schmitt | 1999-06-08 |
| 5741395 | Apparatus for integrally joining elongate preformed thermoplastic elements by friction welding | Robert D. Connor, Robert J. Schmitt | 1998-04-21 |
| 5730820 | Method for integrally joining preformed thermoplastic elements by friction welding | Robert D. Connor, Robert J. Schmitt | 1998-03-24 |
| 5690782 | Apparatus for integrally joining preformed thermoplastic core elements especially adapted for the continuous manufacture of melt-blown filter cartridges | Robert D. Connor, Robert J. Schmitt | 1997-11-25 |
| 5653833 | Method for integrally joining preformed thermoplastic core elements especially adapted for the continuous manufacture of melt-blown filter cartridges | Robert D. Connor, Robert J. Schmitt | 1997-08-05 |