| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 51 | |
| #2 | Austria | 3 | |
| #3 | Spain | 3 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Textiles and paper | |
| #2 | Foods and drinks | |
| #3 | Chemical engineering | |
| #4 | Machines | |
| #5 | Agriculture | |
| #6 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Mechanical treatment of natural fibrous | |
| #2 | Sucrose production | |
| #3 | Separation | |
| #4 | Centrifuges | |
| #5 | Treating harvested food | |
| #6 | Mechanical leather treatments | |
| #7 | Milling | |
| #8 | Dynamo-electric machines | |
| #9 | Generating mechanical vibrations | |
| #10 | Harvesting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Freudenberg Roderich | 6 |
| #2 | Freudenberg Dipl-Ing Roderich | 5 |
| #3 | Brukner Dr Brunolf | 4 |
| #4 | Hackel Erich | 4 |
| #5 | Lueck Kurt | 4 |
| #6 | Freudenberg Roderich Dipl-Ing | 2 |
| #7 | Heinrich Dipl-Ing Kurt | 1 |
| #8 | Piter Otto | 1 |
| #9 | Bruckner Dr Brunolf | 1 |
| #10 | Tietz Kurt | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB498506A | Improvements in the treatment of skins, pelts or the like for tanning or dressing them | |
| ES118665A1 | A new device for centrifuges of white sugar with application of special layers. | |
| DE568777C | Slingshot working continuously | |
| DE441497C | Standing circulation evaporator | |
| DE101C | Standing tubular kettle with conical fire socket and returning train | |
| DE497886C | Sieve drum for centrifugal machines | |
| DE579485C | Filter press |