| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | EPO (European Patent Office) | 3 | |
| #3 | WIPO (World Intellectual Property Organization) | 3 | |
| #4 | Australia | 2 | |
| #5 | Brazil | 1 | |
| #6 | Canada | 1 | |
| #7 | Israel | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Steam traps | |
| #2 | Unspecified technologies | |
| #3 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Cummings Ernie W | 11 |
| #2 | Collins Dennis E | 4 |
| #3 | Ottinger Lester V | 4 |
| #4 | Valk Nick | 3 |
| #5 | Farkas Ralph W | 3 |
| #6 | Cummings Ernest W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5983919A | Automatic drain valve | |
| BR9105676A | Automatic drainage valve | |
| US5014735A | Automatic drain valve | |
| US5004004A | Automatic drain valve | |
| US4779640A | Automatic drain valve | |
| CA1265971A | Automatic drain valve | |
| US4574829A | Automatic drain valve | |
| US4444217A | Automatic drain trap |