| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 2 | |
| #2 | Switzerland | 2 | |
| #3 | Germany | 2 | |
| #4 | France | 2 | |
| #5 | United Kingdom | 2 | |
| #6 | United States | 2 | |
| #7 | Australia | 1 | |
| #8 | Denmark | 1 | |
| #9 | Italy | 1 | |
| #10 | Netherlands | 1 | |
| #11 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Ignition and extinguishing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Yoshinaga Sadao | 3 |
| #2 | Masajiro Yoshinaga | 2 |
| #3 | Yoshinaga S | 2 |
| #4 | Sadao Yoshinaga | 1 |
| #5 | Yoshinaga Masajiro | 1 |
| #6 | Yoshinaga Shojiro | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA939922A | Piezoelectric type gas lighter | |
| GB976017A | Gas fueled lighters | |
| CA718625A | Gas fueled cigar lighter |