| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 1 | |
| #2 | Belgium | 1 | |
| #3 | Canada | 1 | |
| #4 | Switzerland | 1 | |
| #5 | Germany | 1 | |
| #6 | Spain | 1 | |
| #7 | France | 1 | |
| #8 | United Kingdom | 1 | |
| #9 | Italy | 1 | |
| #10 | Norway | 1 | |
| #11 | United States | 1 | |
| #12 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Ignition and extinguishing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ohsawa Y | 3 |
| #2 | Ohsawa Yoichi | 3 |
| #3 | Oshawa Y | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ZA7306052B | A burner valve nozzle | |
| CA973380A | Burner valve nozzle arrangement for liquid gas lighter |