| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 3 | |
| #2 | Switzerland | 2 | |
| #3 | Germany | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | Canada | 1 | |
| #6 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Measurement | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Ignition and extinguishing | |
| #2 | Measuring volume | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Masajiro Yoshinaga | 4 |
| #2 | Yoshinaga Masajiro | 2 |
| #3 | Yoshinaga Sadao | 1 |
| #4 | Sadao Yoshinaga | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3382028A | Gas lighter | |
| US3345870A | Fuel level indicator | |
| GB1047818A | Valve means for gas lighters | |
| US3265102A | Valve means for gas lighters | |
| GB979609A | Valve construction | |
| CA738173A | Fueling valves for lighters |