| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 240 | |
| #2 | France | 113 | |
| #3 | Switzerland | 102 | |
| #4 | Austria | 95 | |
| #5 | EPO (European Patent Office) | 83 | |
| #6 | Belgium | 79 | |
| #7 | Italy | 42 | |
| #8 | Netherlands | 38 | |
| #9 | United Kingdom | 33 | |
| #10 | Luxembourg | 33 | |
| #11 | Canada | 31 | |
| #12 | United States | 24 | |
| #13 | Sweden | 23 | |
| #14 | Denmark | 20 | |
| #15 | Greece | 16 | |
| #16 | Norway | 16 | |
| #17 | Finland | 15 | |
| #18 | Yugoslavia (Serbia and Montenegro) | 11 | |
| #19 | Australia | 10 | |
| #20 | Spain | 9 | |
| #21 | Brazil | 7 | |
| #22 | German Democratic Republic | 5 | |
| #23 | Hungary | 4 | |
| #24 | Japan | 4 | |
| #25 | Poland | 4 | |
| #26 | Czechoslovakia | 3 | |
| #27 | Israel | 3 | |
| #28 | WIPO (World Intellectual Property Organization) | 3 | |
| #29 | Ireland | 2 | |
| #30 | Portugal | 2 | |
| #31 | South Africa | 2 | |
| #32 | China | 1 | |
| #33 | Czechia | 1 | |
| #34 | India | 1 | |
| #35 | Mexico | 1 | |
| #36 | Slovakia | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Environmental technology | |
| #3 | Mechanical elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Viessmann Hans | 344 |
| #2 | Viessmann Hans Dr | 195 |
| #3 | Viessmann H | 71 |
| #4 | Hans Viessmann | 59 |
| #5 | Viessmann Hans Dr H C | 4 |
| #6 | Hansu Fuiisuman | 4 |
| #7 | Zenkner K | 2 |
| #8 | Zenkner Kurt Dr Ing | 2 |
| #9 | Viessman Hans | 2 |
| #10 | Horst Diener | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP1136761A1 | Ventilated floor plate | |
| EP1070805A2 | Floor covering for modular rooms with foot and vehicle access | |
| EP1079035A2 | Accomodation module | |
| EP0741083A1 | Load transporting pallet | |
| EP0724121A1 | Furnace | |
| SK296A3 | Load transporting pallet | |
| EP0634538A1 | Wall lining | |
| EP0691275A1 | Packaging container | |
| EP0616076A2 | Immersable suction molding device and apparatus | |
| EP0618412A1 | Refrigeration unit | |
| EP0591855A1 | Structural member | |
| EP0583574A1 | Gas-fired boiler | |
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| EP0541012A1 | Double walled accumulator | |
| EP0536654A1 | Accumulateur with a double shell | |
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| CH685260A5 | Boiler for liquid or gaseous fuels. | |
| EP0517038A1 | Hot water storage tank | |
| EP0563426A1 | Package |