Issued Patents All Time
Showing 26–50 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6203740 | Extrusion method, extruder and extruded product | Kari Kirjavainen | 2001-03-20 |
| 6203651 | Method and apparatus for making an extrusion product, and an extrusion product | Terho Lahtinen, Michael Sjoberg | 2001-03-20 |
| 6197239 | Extrusion apparatus and method for orienting plastic material by using an extrusion apparatus | Kari Kirjavainen | 2001-03-06 |
| 6187237 | Method for making a product to be extruded, and an extruder | Kari Kirjavainen | 2001-02-13 |
| 6178277 | Multi-layer reinforced and stabilized cable construction | Jussi Ravela, Markku T. Suvanto, Vesa Tuunanen, Markku Heino, Kari Kirjavainen | 2001-01-23 |
| 6176269 | Co-extruder multilayer plastic pipe, method for producing the same, and device therefor | — | 2001-01-23 |
| 6149756 | Method for joining plastic pipes, a joint ring used in the joining and a pipe joint provided with the method | — | 2000-11-21 |
| 6106761 | Method for heating and/or cross-linking of polymers and apparatus therefor | Michael Sjoberg, Jan Rydberg | 2000-08-22 |
| 6086239 | Extruder with supply conduit for supplying even flow of material | Kari Kirjavainen | 2000-07-11 |
| 6073657 | Method for producing homogeneous material with an extruder, an extruder, and a multilayer plastic pipe | Esko Hippeläinen, Kari Kirjavainen | 2000-06-13 |
| 6053214 | Oriented polymeric products | Michael Sjoberg, Jan Rydberg, Nils Yngve Lundequist, Lars Hoving, Hans Martin Tony Josefsson +2 more | 2000-04-25 |
| 6050800 | Sizing apparatus | Peter Glanville Chapman, Allan K. Wallace, Leslie Herbert Cowling, Eino Holso | 2000-04-18 |
| 6016849 | Plastics pipe | David Charles Harget, Mikael Andersson, Eino Holso | 2000-01-25 |
| 5975143 | Method for manufacturing a corrugated pipe, and a corrugated pipe manufactured by the method | Björn Olsson, Dieter Scharwachter, Lennart gren | 1999-11-02 |
| 5957505 | Branch pipe connection | — | 1999-09-28 |
| 5928451 | Method of socketing a pipe | Mats Johansson | 1999-07-27 |
| 5759461 | Method of forming a multi-layer plastic pipe for conducting fluids | Mikael Andersson, Anders Vestergaard | 1998-06-02 |
| 5653452 | Socket joint for plastic pipes | — | 1997-08-05 |
| 5589127 | Method and apparatus for forming ribs with sideward projections in a plastic pipe, and a plastic pipe | Dieter Scharwachter, Ake Johansson, Ronny Kristensson | 1996-12-31 |
| 5526847 | Pipes with integral sockets | George Macovaz, Peter Glanville Chapman | 1996-06-18 |
| 5449487 | Method and apparatus for orienting plastic of a pipe | — | 1995-09-12 |
| 5340299 | Apparatus for manufacturing ribbed pipes | Eino Holso | 1994-08-23 |
| 5171500 | Pipe manufacturing line | Dieter Scharwachter | 1992-12-15 |
| 5139730 | Method and apparatus for manufacturing ribbed pipe | Paul Holso, Eino Holso, Dieter Scharwachter, Lennart Agren | 1992-08-18 |
| 5018959 | Device for producing a grate construction and a grate construction | — | 1991-05-28 |