| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 4 | |
| #2 | Germany | 3 | |
| #3 | France | 2 | |
| #4 | Denmark | 1 | |
| #5 | United Kingdom | 1 | |
| #6 | Norway | 1 | |
| #7 | Philippines | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry | |
| #2 | Materials and metallurgy | |
| #3 | Thermal processes | |
| #4 | Chemical engineering | |
| #5 | Environmental technology | |
| #6 | Organic fine chemistry |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ito Shozo | 5 |
| #2 | Imai Orio | 2 |
| #3 | Takahashi A | 2 |
| #4 | Okawara Y | 2 |
| #5 | Usuba Yoshiro | 2 |
| #6 | Akira Takahashi Dipl-Ing | 1 |
| #7 | Abe K | 1 |
| #8 | Usuba Y | 1 |
| #9 | Ito S | 1 |
| #10 | Watanabe T | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4049395A | Method for treating raw material with a treating gas | |
| PH11511A | Method for producing castiron in vertical type furnace | |
| US4060393A | Apparatus for treating raw material with a treating gas | |
| GB1246397A | Cupolas | |
| DE1671340A1 | Method and device for charring waste materials | |
| US3446493A | High speed continuous method and apparatus for carbonization and activation of organic material |