| 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 |