| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 4 | |
| #2 | Australia | 3 | |
| #3 | Bulgaria | 3 | |
| #4 | Canada | 3 | |
| #5 | Hungary | 3 | |
| #6 | Norway | 3 | |
| #7 | United States | 3 | |
| #8 | Brazil | 2 | |
| #9 | China | 2 | |
| #10 | Czechia | 2 | |
| #11 | Finland | 2 | |
| #12 | Netherlands | 2 | |
| #13 | Poland | 2 | |
| #14 | WIPO (World Intellectual Property Organization) | 2 | |
| #15 | Hong Kong | 1 | |
| #16 | India | 1 | |
| #17 | Republic of Korea | 1 | |
| #18 | Mexico | 1 | |
| #19 | Romania | 1 | |
| #20 | Slovakia | 1 | |
| #21 | Taiwan | 1 | |
| #22 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Chemical engineering | |
| #3 | Materials and metallurgy | |
| #4 | Biotechnology |
| # | Technology | |
|---|---|---|
| #1 | Climate change adaptation technologies | |
| #2 | Separation | |
| #3 | Reduction of greenhouse gas emissions | |
| #4 | Water treatment | |
| #5 | Non-metallic elements | |
| #6 | Microorganisms |
| # | Name | Total Patents |
|---|---|---|
| #1 | Buisman Cees Jan Nico | 31 |
| #2 | Dijkman Hendrik | 19 |
| #3 | Verbraak Petrus Leonardus | 17 |
| #4 | Dijkman Henk | 10 |
| #5 | Den Hartog Adrianus Johannes | 9 |
| #6 | Huber Harold | 7 |
| #7 | Krol Johannes Pieter | 6 |
| #8 | Hartog Adrianus Johannes Den | 5 |
| #9 | Stetter Karl Otto | 5 |
| #10 | Krol Johannes P | 4 |
| Publication | Filing date | Title |
|---|---|---|
| NL1009612C1 | Method for cleaning a waste gas. | |
| EP0819756A1 | Sulphur reducing bacterium and its use in biological desulphurisation processes | |
| HU9801358A2 | Process and instalation for purifying flue gas containing nitrogen oxides | |
| NL9500215A | Method of cleaning nitrogen oxide-containing flue gas |