| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 24 | |
| #2 | United Kingdom | 3 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Chemical engineering | |
| #3 | Foods and drinks | |
| #4 | Materials and metallurgy | |
| #5 | Environmental technology | |
| #6 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Milling | |
| #2 | Mixing | |
| #3 | Separating solids | |
| #4 | Building materials | |
| #5 | Climate change mitigation in wastewater treatment | |
| #6 | Supplying combustion engines | |
| #7 | Cocoa and sweets |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hildebrandt Hermann | 2 |
| #2 | Hermann Hildebrandt | 1 |
| #3 | Schaefer Max | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE821922C | Production of a heat-insulating compound | |
| GB351481A | Improved sifting device with rotary blade wheel | |
| GB284354A | Improved method and device for mixing, emulsifying, homogenising, comminuting and so forth substances of all kinds | |
| US1605025A | Comminuting and mixing of substances of all kinds | |
| GB234520A | Improvements relating to the comminuting and mixing of substances of all kinds |