| # | Country | Total Patents | |
|---|---|---|---|
| #1 | WIPO (World Intellectual Property Organization) | 5 | |
| #2 | Germany | 4 | |
| #3 | Australia | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | Austria | 1 | |
| #6 | Canada | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Thermal processes | |
| #3 | Machines | |
| #4 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Domestic heating systems | |
| #3 | Unspecified technologies | |
| #4 | Measuring volume |
| # | Name | Total Patents |
|---|---|---|
| #1 | Dumrath Rainald | 8 |
| #2 | Hagen Michael | 4 |
| #3 | Dumrath Rolf Rainald | 1 |
| #4 | Dumrath Hagen Nadja | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE102004062342A1 | ball valve | |
| DE102004031225B4 | vent | |
| DE10261936B4 | vent | |
| WO03095876A1 | Shut-off cock | |
| WO02063189A1 | Control- or stop-valve | |
| DE19742325C1 | Ball valve for sanitary installations | |
| ATA272688A | Travel limiter for a ball valve |