Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10591517 | Electrical fault detection | Steven Fletcher, Patrick Norman | 2020-03-17 |
| 9863998 | Electrical fault location method | Steven Fletcher, Patrick Norman | 2018-01-09 |
| 8842401 | Protection system for an electrical power network | Jason E Hill, Steven Fletcher, Patrick Norman | 2014-09-23 |
| 8837095 | DC electrical power system | Patrick Norman, Graeme Burt | 2014-09-16 |
| 8280660 | Electrical distribution networks | Matthew Ingham, David Reginald Trainer, Adam Dysko | 2012-10-02 |
| 7800880 | Earthing arrangement | Lihua Hu, David Reginald Trainer, Michael P Hirst | 2010-09-21 |