| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 17 | |
| #2 | WIPO (World Intellectual Property Organization) | 6 | |
| #3 | EPO (European Patent Office) | 5 | |
| #4 | United States | 4 | |
| #5 | Australia | 3 | |
| #6 | Canada | 2 | |
| #7 | China | 2 | |
| #8 | Mexico | 2 | |
| #9 | Norway | 2 | |
| #10 | Brazil | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Engines, pumps and turbines | |
| #3 | Environmental technology | |
| #4 | Electrical machinery and energy | |
| #5 | Transport |
| # | Name | Total Patents |
|---|---|---|
| #1 | Stewart Donald | 22 |
| #2 | Stewart Kenneth Roderick | 19 |
| #3 | Donald Stewart | 10 |
| #4 | Kenneth Roderick Stewart | 6 |
| #5 | Cargill Kevin | 1 |
| #6 | Kevin Cargill | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB201814059D0 | Improved underwater device | |
| GB201806451D0 | Improvements in and relating to underwater excavation apparatus | |
| GB201802340D0 | Improved location marker device | |
| GB201718480D0 | Improved cutting tool | |
| GB201614460D0 | Improvements in and relating to underwater excavation apparatus | |
| GB201513606D0 | Separator apparatus | |
| GB201307558D0 | Improved turbine | |
| GB201110855D0 | Apparatus for separating fluids and associated methods |