Koji Tokuda
27Patents
7h-index
33Co-inventors
69Inventor score
Filing activity: Feb 20, 1998 → Dec 11, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6149709A | Method of making iron and steel | Emerging Cross-Sectional Technologies | 46 | Expired |
| US6413295B2 | Iron production method of operation in a rotary hearth furnace and improved furnace apparatus | Emerging Cross-Sectional Technologies | 28 | Expired |
| US6630010B2 | Method of producing metallic iron | Emerging Cross-Sectional Technologies | 26 | Expired |
| US6210462A | Method and apparatus for making metallic iron | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6592649B2 | Method of producing iron nuggets | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6569223B2 | Method of manufacturing molten metal iron | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7768447B2 | Radar apparatus and the like | Physics | 8 | Active |
| US8620106B2 | Chart display device and method for displaying chart | Physics | 6 | Active |
| US6284018A | Method of making iron and steel | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6689182B2 | Method and device for producing molten iron | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US8012236B2 | Method and apparatus for producing reduced metal | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US6778467B2 | Underwater sounding apparatus | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7160353B2 | Process for producing molten iron | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7806959B2 | Metallic iron nuggets | Emerging Cross-Sectional Technologies | 2 | Active |
| US8377169B2 | Method and apparatus for manufacturing granular metallic iron | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US8187359B2 | Granulated metallic iron superior in rust resistance and method for producing the same | Emerging Cross-Sectional Technologies | 1 | Active |
| US7462219B2 | Production method of metal iron | Emerging Cross-Sectional Technologies | 1 | Expired |
| US8157888B2 | Process for producing molten iron | Emerging Cross-Sectional Technologies | 1 | Active |
| US8617459B2 | Method and apparatus for manufacturing granular metallic iron | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US7369461B2 | Acoustic transducer and underwater sounding apparatus | Physics | 1 | Active |
| US9310133B2 | Rotary hearth furnace exhaust gas duct apparatus and method for operating same | Emerging Cross-Sectional Technologies | 1 | Active |
| US11428468B2 | Rotary hearth furnace, and method for producing reduced iron using rotary hearth furnace | Chemistry; Metallurgy | 0 | Active |
| US7674316B2 | Method for producing metallic iron | Emerging Cross-Sectional Technologies | 0 | Active |
| US12281365B2 | Method for producing molten steel | Emerging Cross-Sectional Technologies | 0 | Active |
| US8034283B2 | Rotary hearth furnace and method of operating the same | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.