Bjorn Widell
12Patents
7h-index
9Co-inventors
55Inventor score
Filing activity: Mar 28, 1974 → Oct 10, 1989
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4073642A | Method for reducing material containing iron oxides | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4149024A | Arc furnace for reducing metal oxides and method for operating such a furnace | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US3940551A | Apparatus and method for the melt reduction of iron oxides | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4070181A | Method for reduction of finely divided metal oxide material | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4359212A | Apparatus for reducing finely divided iron oxide material | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4146390A | Furnace and method for the melt reduction of iron oxide | Chemistry; Metallurgy | 8 | Expired |
| US4094665A | Method for simultaneous combined production of electrical energy and crude iron | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4177061A | Method for making iron-chromium alloys | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4969158A | Inductive heating unit | Electricity | 6 | Expired |
| US4135052A | DC arc furnace arc control | Electricity | 4 | Expired |
| US4080195A | Melt reduction of iron ore | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4084958A | Method of reducing finely grained material containing iron oxides in a fluid bed | Emerging Cross-Sectional Technologies | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.