| 9744731 |
Installations for manufacturing biaxially oriented tubing and the tubing itself |
Hendrik Jan Carel Jansen Klomp, Jan-Mark Bosch |
2017-08-29 |
| 8911660 |
Methods and devices for manufacturing biaxially oriented tubing |
Hendrik Jan Carel Jansen Klomp, Jan-Mark Bosch |
2014-12-16 |
| 7217379 |
Thermoplastic tube |
Arjan Dirk van Lenthe, Jan Hendrik Prenger |
2007-05-15 |
| 7069635 |
Methods and devices for the production of a pipe from biaxialy oriented thermoplastic material having an integrated socket |
Arjan Dirk van Lenthe, Duncan Hamilton Wormald, Jan Hendrik Prenger |
2006-07-04 |
| 6726863 |
Thermoplastic tube |
Arjan Dirk van Lenthe, Jan Hendrik Prenger |
2004-04-27 |
| 6368547 |
Method for producing an extruded hollow plastic section |
— |
2002-04-09 |
| 6214283 |
Method for treating an extruded plastic section and extrusion installation therefor |
Jan Hendrik Prenger, Johan Schuurman |
2001-04-10 |
| 6146572 |
Method for forming a socket on a pipe of biaxially oriented polyvinyl chloride |
— |
2000-11-14 |
| 5911933 |
Method for producing a thermoplastic tubular profile and internal cooling unit for such a method |
Jan Hendrik Prenger |
1999-06-15 |
| 5817270 |
Method and device for manufacturing biaxially oriented tubing from thermoplastic material |
Jan Hendrik Prenger, Johan Schuurman |
1998-10-06 |
| 5785906 |
Method and device for manufacturing biaxially oriented tubing from thermoplastic material |
Jan Hendrik Prenger, Johan Schuurman |
1998-07-28 |
| 4855574 |
Welding sleeve with connecting means having an upper and lower part |
Bernard Lodder, Roelof Koopman |
1989-08-08 |