| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 6 | |
| #2 | Canada | 1 | |
| #3 | Switzerland | 1 | |
| #4 | Germany | 1 | |
| #5 | France | 1 | |
| #6 | Republic of Korea | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Medical technology | |
| #3 | Thermal processes | |
| #4 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Containers for goods storage | |
| #2 | Implantable devices | |
| #3 | Production or use of heat | |
| #4 | Kitchen equipment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Higashijima Sunao | 11 |
| Publication | Filing date | Title |
|---|---|---|
| JPS5538114A | Top | |
| JPS52152389A | Heat generating gas | |
| JPS5327877A | Method of manufacturing heat generating bag | |
| CA1065728A | Packaged heat generator | |
| KR790001955B1 | Packaged heat generator | |
| US4106478A | Packaged heat generator | |
| JPS52113383A | Exothermic agent | |
| JPS5274486A | Exotermic bag making method | |
| JPS51135794A | Method of packing heat generating agent |