| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Denmark | 6 | |
| #2 | Austria | 4 | |
| #3 | Finland | 4 | |
| #4 | United States | 4 | |
| #5 | France | 3 | |
| #6 | Canada | 1 | |
| #7 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Foods and drinks | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Centrifuges | |
| #2 | Dairy products | |
| #3 | Shafts | |
| #4 | Dairy products production |
| # | Name | Total Patents |
|---|---|---|
| #1 | Maarten Risberg Johannes Walde | 4 |
| #2 | Risberg Johannes Valdemar Maarten | 3 |
| #3 | Risberg J V M | 1 |
| #4 | Risberg Johannes Valdemar Marten | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB190708708A | Improvements in the Manufacture of Butter. | |
| US908887A | Manufacture of butter. | |
| CA101899A | Centrifugal liquid separator | |
| US847697A | Manufacture of butter in centrifugal apparatus. | |
| US902912A | Self-adjusting bearing. | |
| US902913A | Liner for centrifugal liquid-separators. |