| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 6 | |
| #2 | South Africa | 5 | |
| #3 | Spain | 4 | |
| #4 | France | 4 | |
| #5 | United States | 4 | |
| #6 | Brazil | 2 | |
| #7 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Mechanical elements | |
| #3 | Machines | |
| #4 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Swimming pools | |
| #2 | Unspecified technologies | |
| #3 | Venting or aerating devices | |
| #4 | Pipes | |
| #5 | Reduction of greenhouse gas emissions |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kallenbach Dieter Hans Frieder | 11 |
| #2 | Kallenbach Dieter H F | 6 |
| #3 | Kallenbach Dieter Hans F | 3 |
| #4 | Dieter Hans Friederich Kallenb | 3 |
| #5 | Frieder Kallenbach Dieter Hans | 2 |
| #6 | Kallenbach Dieter Hans Friedri | 2 |
| #7 | Robert Norman Twigg | 1 |
| #8 | Dieter Hans Friedrich Kallenba | 1 |
| #9 | Twigg Robert Norman | 1 |
| #10 | Kallenbach Dieter Hans | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5033504A | Automatic relief valve | |
| ZA9000467B | Automatic relief valve | |
| ZA8906834B | Pool cleaner accessory | |
| US4982754A | Pool cleaner accessory | |
| FR2635282A1 | APPARATUS FOR CLEANING POOLS | |
| BR8900944A | Flexible disc | |
| ES2013042A6 | Plastic disc for swimming-pool cleaning equipment | |
| AU3015789A | Pool cleaner component | |
| ZA8901288B | Pool weir | |
| ZA8901055B | Pool cleaner component | |
| ZA8809095B | Relief valve |