Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |