| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 3 | |
| #2 | Australia | 1 | |
| #3 | Brazil | 1 | |
| #4 | Canada | 1 | |
| #5 | China | 1 | |
| #6 | EPO (European Patent Office) | 1 | |
| #7 | Israel | 1 | |
| #8 | Norway | 1 | |
| #9 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Civil engineering | |
| #3 | Control |
| # | Name | Total Patents |
|---|---|---|
| #1 | Leon Eric | 9 |
| #2 | Leon Stephen | 9 |
| #3 | Leon David | 7 |
| #4 | Leon E | 1 |
| #5 | Leon D | 1 |
| #6 | Leon S | 1 |
| #7 | Bond David Leon | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CN1210478A | Water distribution system with water saving diffusers | |
| US5823226A | Automatic variable-demand flow regulator | |
| US5816497A | Water-saving diffuser and water distribution system having water fixtures with variable water-saving diffusers |