| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 18 | |
| #2 | Denmark | 4 | |
| #3 | Brazil | 2 | |
| #4 | Finland | 2 | |
| #5 | Italy | 2 | |
| #6 | Norway | 2 | |
| #7 | Switzerland | 1 | |
| #8 | United Kingdom | 1 | |
| #9 | Israel | 1 | |
| #10 | Japan | 1 | |
| #11 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Steam generation | |
| #2 | Heat-exchanger without contact | |
| #3 | Fluid heaters | |
| #4 | Superheating of steam | |
| #5 | Heat-exchange device details | |
| #6 | Cleaning heat-exchanger internal surfaces | |
| #7 | Pipes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Vorkauf H | 13 |
| #2 | Svensson K | 7 |
| #3 | Svensson K N G | 6 |
| #4 | Svensson G | 5 |
| #5 | Gatzer G | 3 |
| #6 | Von Paczkouski K | 1 |
| #7 | Schatz V | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1420718A | Natural circulation water tube boilers | |
| IL25255A | Water tube boiler |