| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | Japan | 3 |
| # | Industry | |
|---|---|---|
| #1 | Computer technology | |
| #2 | Audio-visual technology | |
| #3 | Optics | |
| #4 | IT methods for management | |
| #5 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Electric digital data processing | |
| #2 | Television | |
| #3 | Electrography | |
| #4 | Climate change mitigating computer technologies | |
| #5 | Data processing systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nakagawa Isamu | 11 |
| Publication | Filing date | Title |
|---|---|---|
| JP2004270383A | Lightweight, construction time reduction type fire resistant heat insulative roof asphalt waterproof method | |
| JP2003313996A | Asphalt membrane waterproofing method capable of shortening construction period, for fire-resistant and heat-insulating roof floor | |
| JPS54136982A | Implement for displaying picture and buddhist name of dead person |