| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Denmark | 3 | |
| #2 | Sweden | 3 | |
| #3 | Brazil | 2 | |
| #4 | Germany | 2 | |
| #5 | France | 2 | |
| #6 | Italy | 2 | |
| #7 | Netherlands | 2 | |
| #8 | Australia | 1 | |
| #9 | Switzerland | 1 | |
| #10 | Egypt | 1 | |
| #11 | United Kingdom | 1 | |
| #12 | Hong Kong | 1 | |
| #13 | Malaysia | 1 | |
| #14 | United States | 1 | |
| #15 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Basic communication technologies | |
| #3 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Ignition and extinguishing | |
| #2 | Pulse technique | |
| #3 | Kitchen equipment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ohsawa Y | 7 |
| #2 | Ohsawa Yoichi | 4 |
| #3 | Oshawa Y | 1 |
| #4 | Ohsawa J | 1 |
| #5 | Ohsawa Jiro | 1 |
| #6 | Ohsawa Yichi | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4919111A | Igniting apparatus | |
| IT1202421B | Ignition circuit for gas lighters - uses thyristor controlled charging of capacitor which discharges across spark gap | |
| GB1524150A | Electronic ignition circuit for a cigarette lighter | |
| FR2315663A1 | Push button for electrical lighters - is flush with lighter gas and connects to rod and spring | |
| EG12010A | Burner valve nozzle arrangement for liquid gas lighter |