Spirac Engineering AB
Records under this name other than patents Spirac Engineering AB holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,357,577 | Conveyor arrangements with multiple shaftless screws Term ended Term ended Sep 22, 2019 · From the USPTO record | Term ended | Term ended Sep 22, 2019 | From the USPTO record |
| US 6,096,201 | Apparatus for separation Term ended Term ended Mar 30, 2019 · From the USPTO record | Term ended | Term ended Mar 30, 2019 | From the USPTO record |
| US 6,187,180 | Apparatus for screening Term ended Term ended Mar 30, 2019 · From the USPTO record | Term ended | Term ended Mar 30, 2019 | From the USPTO record |
| US 4,779,528 | Floating shaftless helix screw press Term ended Term ended no later than Oct 25, 2008 · Low confidence | Term ended | Term ended no later than Oct 25, 2008 | Low confidence |
| US 4,922,768 | Driving device Term ended Term ended no later than May 8, 2010 · Low confidence | Term ended | Term ended no later than May 8, 2010 | Low confidence |
| US 4,961,864 | Separating device Term ended Term ended no later than Oct 9, 2010 · Low confidence | Term ended | Term ended no later than Oct 9, 2010 | Low confidence |
| US 4,984,477 | Driving device Term ended Term ended no later than Jan 15, 2011 · Low confidence | Term ended | Term ended no later than Jan 15, 2011 | Low confidence |
| US 5,000,307 | Transportation device Term ended Term ended no later than Mar 19, 2011 · Low confidence | Term ended | Term ended no later than Mar 19, 2011 | Low confidence |
| US 5,092,453 | Helical conveyor Term ended Term ended no later than Mar 3, 2012 · Low confidence | Term ended | Term ended no later than Mar 3, 2012 | Low confidence |
| US 5,337,658 | Conveying and compacting apparatus having a shaftless spiral in a casing with drainage openings Term ended Term ended no later than Aug 16, 2014 · Low confidence | Term ended | Term ended no later than Aug 16, 2014 | Low confidence |