Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12031542 | Vacuum pump comprising a relief valve and a method of assembly of the relief valve | David Alan Turrell | 2024-07-09 |
| 11578722 | Multi-stage vacuum booster pump coupling | David Alan Turrell | 2023-02-14 |
| 11542946 | Twin-shaft pumps with thermal breaks | Phillip North, Michael Henry North, Malcolm William Gray, David Alan Turrell | 2023-01-03 |
| 11098718 | Pump cooling systems | Michael Henry North, Phillip North, Malcolm William Gray | 2021-08-24 |
| 10539123 | Pressure regulating apparatus including conduit | Jack Raymond Tattersall, Alan Ernest Kinnaird Holbrook, Matthew Richard Wickes | 2020-01-21 |
| 9551333 | Vacuum pump with longitudinal and annular seals | Stephen Dowdeswell, Sivabalan Kailasam, Alan Ernest Kinnaird Holbrook | 2017-01-24 |
| 9026549 | Image tile server | Christian Fernandez, Michael Lessin | 2015-05-05 |
| 9004891 | Vacuum pump | Malcolm William Gray, Jack Raymond Tattersall | 2015-04-14 |
| 8827669 | Screw pump having varying pitches | Michael Henry North, Tristan Richard Ghislain Davenne, Timothy Charles Draper | 2014-09-09 |
| 8244770 | Image tile server | Christian Fernandez, Michael Lessin | 2012-08-14 |
| 7214041 | Seal assemblies | Peter Birch, David Alan Turrell, Malcolm William Gray | 2007-05-08 |
| 7101155 | Vacuum pumping system and method of controlling the same | Derek Savidge, Graeme Huntley | 2006-09-05 |
| 7054665 | Billing records enhanced by called party names from subscriber phone book | — | 2006-05-30 |
| 6523458 | Portable toast warmer | — | 2003-02-25 |
| 6459909 | Distributed cellular telephone antenna system with adaptive cell configuration | Neil Bilcliff | 2002-10-01 |
| 6396890 | Phase corrected frequency synthesizers | — | 2002-05-28 |