| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 8 | |
| #2 | France | 5 | |
| #3 | United States | 4 | |
| #4 | Canada | 3 | |
| #5 | United Kingdom | 3 | |
| #6 | Sweden | 3 | |
| #7 | Austria | 1 | |
| #8 | Switzerland | 1 | |
| #9 | Finland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Packaging and shipping | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Unspecified technologies | |
| #3 | Dredging | |
| #4 | Lifting and pushing | |
| #5 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ekman Thure | 23 |
| #2 | Thure Ekman | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE3630583A1 | Pipeline or hose-line coupling | |
| CA1280781C | Coupling arrangement | |
| GB8604210D0 | Coupling arrangement | |
| CA1280783C | Female coupling component forming a part of a quick coupling | |
| FI213674A | Mellan en foersta ledning och en andra ledning inlaenkbar skarvenhet | |
| CA998712A | Coupling or jointing unit |