| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 11 | |
| #2 | Australia | 4 | |
| #3 | France | 4 | |
| #4 | Germany | 3 | |
| #5 | Denmark | 2 | |
| #6 | Spain | 2 | |
| #7 | Finland | 2 | |
| #8 | Ireland | 2 | |
| #9 | Italy | 2 | |
| #10 | Japan | 2 | |
| #11 | Netherlands | 2 | |
| #12 | Norway | 2 | |
| #13 | Sweden | 2 | |
| #14 | Belgium | 1 | |
| #15 | Brazil | 1 | |
| #16 | Canada | 1 | |
| #17 | Switzerland | 1 | |
| #18 | Greece | 1 | |
| #19 | Hong Kong | 1 | |
| #20 | Luxembourg | 1 | |
| #21 | New Zealand | 1 | |
| #22 | Portugal | 1 | |
| #23 | United States | 1 | |
| #24 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Control | |
| #3 | Civil engineering | |
| #4 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Systems controlling non-electric variables | |
| #3 | Domestic plumbing installations | |
| #4 | Pistons and sealings | |
| #5 | Metal-working | |
| #6 | Pipes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hanson G | 11 |
| #2 | Hanson Geoffrey | 11 |
| #3 | Bacon Merlyn Cecil Philip Step | 3 |
| #4 | Jiefurii Hansun | 1 |
| #5 | Wheeler Anthony Bernard | 1 |
| #6 | Holloway Leonard Robert | 1 |
| #7 | Crowther Philip Dunham | 1 |
| #8 | Jiefurii Hanson | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB2093568A | Ball valves | |
| GB2062132A | Flexible bellows | |
| GB2043301A | Radiator valves | |
| US4210312A | Valve using flexible element | |
| IT1069973B | Valve having core element with surrounding flexible sheath - so that relative movement between them causes sheath block a duct | |
| GB1528390A | Fluid control ball valve | |
| DE2633185A1 | Valve shaft and cover with bellows seal - is produced by using heat conductive clips in assembly prior to welding | |
| GB1515363A | Ball closure valves | |
| GB1565211A | Vlve | |
| GB1501936A | Valves | |
| GB1478808A | Spherical plug valve | |
| GB1374833A | Backflow preventors | |
| GB1244796A | An improvement in or relating to float valves | |
| GB1248210A | Improvements in or relating to water taps |