| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 3 | |
| #2 | South Africa | 2 | |
| #3 | Australia | 1 | |
| #4 | Canada | 1 | |
| #5 | Germany | 1 | |
| #6 | Denmark | 1 | |
| #7 | Spain | 1 | |
| #8 | France | 1 | |
| #9 | Israel | 1 | |
| #10 | Italy | 1 | |
| #11 | Japan | 1 | |
| #12 | Netherlands | 1 | |
| #13 | Norway | 1 | |
| #14 | Portugal | 1 | |
| #15 | Sweden | 1 | |
| #16 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Basic materials chemistry | |
| #3 | Materials and metallurgy | |
| #4 | Chemical engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hood P | 6 |
| #2 | Hood Peter | 4 |
| #3 | Piitaa Futsudo | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DK10580A | Procedure for manufacturing cement clinks | |
| GB2042497A | Cement production | |
| US4203376A | Treatment of waste | |
| GB1551020A | Preparation of fuels | |
| GB1551019A | Method for the production of heat from waste |