| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 4 | |
| #2 | United States | 3 | |
| #3 | Spain | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | Austria | 1 | |
| #6 | Germany | 1 | |
| #7 | Denmark | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Chemical engineering | |
| #3 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Preparing clay | |
| #2 | Mixing | |
| #3 | Shaping of plastics | |
| #4 | Presses |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sprenger Emil | 10 |
| #2 | Emil Sprenger | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1057589A | Mixing-machine. | |
| US1057590A | Method of mixing binding agents and other substances with granular material. | |
| GB191113899A | An Improved Method of, and Apparatus for, Mixing Binding Agents and other Substances with Granular Material. | |
| US923595A | Block-press. | |
| GB190805024A | Hand Operated Press for Moulding Bricks or Building Blocks from any Suitable Material. |