| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 4 | |
| #2 | Sweden | 3 | |
| #3 | Australia | 2 | |
| #4 | Canada | 2 | |
| #5 | Norway | 2 | |
| #6 | United States | 2 | |
| #7 | WIPO (World Intellectual Property Organization) | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Baecklund Ingvar | 11 |
| #2 | Backlund Ingvar | 5 |
| #3 | Bocklund Ingvar | 1 |
| Publication | Filing date | Title |
|---|---|---|
| WO9913251A1 | A diaphragm valve and a valve housing for a diaphragm valve | |
| WO9845629A1 | Diaphragm valve | |
| EP0859923A1 | Diaphragm valve | |
| EP0705403A1 | Diaphragm valve |