Kai Johansen
8Patents
4h-index
17Co-inventors
50Inventor score
Filing activity: May 21, 2001 → Dec 24, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6440193B1 | Method and reactor for production of aluminum by carbothermic reduction of alumina | Chemistry; Metallurgy | 16 | Expired |
| US6805723B2 | Method and reactor for production of aluminum by carbothermic reduction of alumina | Chemistry; Metallurgy | 6 | Expired |
| US6980580B2 | Electrode arrangement as substitute bottom for an electrothermic slag smelting furnace | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7901561B2 | Method for electrolytic production and refining of metals | Chemistry; Metallurgy | 5 | Active |
| US9435052B2 | Arrangement for manufacturing crystalline silicon ingots | Emerging Cross-Sectional Technologies | 1 | Active |
| US6811677B2 | Electrolytic cell for the production of aluminum and a method for maintaining a crust on a sidewall and for recovering electricity | Chemistry; Metallurgy | 1 | Expired |
| US7504010B2 | Anode for electrolysis of aluminum | Chemistry; Metallurgy | 0 | Active |
| US9388481B2 | High strength, oxidation and wear resistant titanium-silicon based alloy | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.