| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Spain | 6 | |
| #2 | Canada | 5 | |
| #3 | United Kingdom | 4 | |
| #4 | Austria | 2 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Chemical engineering | |
| #3 | Environmental technology | |
| #4 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Metal production and refining | |
| #2 | Furnaces | |
| #3 | Climate change mitigation in goods production | |
| #4 | Flotation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hovland Henry Bert | 9 |
| #2 | Frankforter George B | 2 |
| #3 | Frankenforter George Bell | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB105571A | Apparatus for Treating Ores and other Materials. | |
| GB100681A | Apparatus for Treating Ores and other Materials. | |
| GB100545A | Apparatus for Treating Ores and other Materials under Pressure. | |
| GB100488A | Method of Sulphating Materials. | |
| CA170270A | Sulphating method | |
| CA170317A | Ore manufacture | |
| CA170318A | Ore machine | |
| CA170271A | Sulphating method | |
| CA166583A | Metallurgical process |