| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 8 | |
| #2 | WIPO (World Intellectual Property Organization) | 4 | |
| #3 | EPO (European Patent Office) | 3 | |
| #4 | Canada | 2 | |
| #5 | China | 2 | |
| #6 | Norway | 2 | |
| #7 | United States | 2 | |
| #8 | South Africa | 2 | |
| #9 | Argentina | 1 | |
| #10 | Australia | 1 | |
| #11 | Brazil | 1 | |
| #12 | Czechia | 1 | |
| #13 | Estonia | 1 | |
| #14 | India | 1 | |
| #15 | Republic of Korea | 1 | |
| #16 | Mexico | 1 | |
| #17 | Slovakia | 1 | |
| #18 | Yugoslavia (Serbia and Montenegro) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Basic materials chemistry | |
| #3 | Machines | |
| #4 | Civil engineering | |
| #5 | Machine tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Enston Robert Peter | 35 |
| Publication | Filing date | Title |
|---|---|---|
| US2011041923A1 | Apparatus and method for the freeing of seized valves | |
| WO2006054034A1 | Sealing of valves | |
| GB0526146D0 | Sealing of valves | |
| GB0120496D0 | Freeing of seized valves | |
| GB9911894D0 | Freeing of seized valves |