| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Brazil | 4 | |
| #2 | United Kingdom | 4 | |
| #3 | Sweden | 4 | |
| #4 | Argentina | 2 | |
| #5 | Canada | 2 | |
| #6 | Germany | 2 | |
| #7 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Chemical engineering | |
| #3 | Machine tools | |
| #4 | Engines, pumps and turbines | |
| #5 | Machines | |
| #6 | Thermal processes | |
| #7 | Mechanical elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rosaen N | 12 |
| #2 | Rosaen B | 3 |
| #3 | Roasaen N | 1 |
| #4 | Rosaen O | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3776037A | Flow indicator device with sealing means | |
| US3724269A | Fluid device having flow control and indicating means |