| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 4 | |
| #2 | WIPO (World Intellectual Property Organization) | 3 | |
| #3 | Norway | 2 | |
| #4 | United States | 2 | |
| #5 | Brazil | 1 | |
| #6 | China | 1 | |
| #7 | Denmark | 1 | |
| #8 | Poland | 1 | |
| #9 | Russian Federation | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Pipes | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gravningen Roar | 8 |
| #2 | Nygaard Anders | 6 |
| #3 | Nygård Anders | 5 |
| #4 | Bæver Bjørn | 4 |
| #5 | Barlindhaug Snorre | 4 |
| #6 | Bjerke Ole-Jakob | 4 |
| #7 | Danilin Oddvar | 4 |
| #8 | Syvertsen Joern | 3 |
| #9 | Hjallen Helge | 2 |
| #10 | Nygard Anders | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2016069497A1 | Locking device for pipes | |
| CN102301165B | A Double Disc Gate Valve | |
| WO2010023120A1 | A socket for a pipe joint | |
| EP1636519A1 | Gate valve | |
| PL363964A1 | Gate valve |