Inventor
TUOVINEN FRANS H
16 patents
⚠️ This page may combine multiple inventors who share the name “TUOVINEN FRANS H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OUTOKUMPU OY
15 patentsUS4818290AApr 4, 1989
Method for utilizing slag from ferroalloy production
OUTOKUMPU OY29 citations92
US4469493ASep 4, 1984
Method and apparatus for the purification of gases which contain solid and gaseous impurities
OUTOKUMPU OY66 citations90
US4650510AMar 17, 1987
Method and apparatus for manufacturing heat-resistant and/or fire-resistant fibre materials
OUTOKUMPU OY13 citations73
US4284665AAug 18, 1981
Process for coating an electrically nonconductive material with metal
OUTOKUMPU OY9 citations72
US4211553AJul 8, 1980
Method of refining of melts by means of a pulverous solid material and/or a gas
OUTOKUMPU OY13 citations68
US4946811AAug 7, 1990
Method for mixing molten iron silicate with ferroalloy slag in order to produce fire-resistant and chemically resistant fiber
OUTOKUMPU OY18 citations67
US4393029AJul 12, 1983
Process for the production of an iron-free chronium (III) compound
OUTOKUMPU OY7 citations67
US4740239AApr 26, 1988
Process for exploitation of low grade oxidic and iron-bearing complex ores or concentrates
OUTOKUMPU OY6 citations60
US4304596ADec 8, 1981
Process for a sulfidizing pretreatment of the slag of pyrometallurgical processes in order to facilitate its further treatment
OUTOKUMPU OY4 citations60
US4313849AFeb 2, 1982
Process for the production of activated carbon from a moist organic substance
OUTOKUMPU OY6 citations59
US4458352AJul 3, 1984
Method and device providing mobility to a contact shoe independent of an electrode in an electric-arc furnace
OUTOKUMPU OY6 citations58
US4464764AAug 7, 1984
Device for moving solid material fed onto the surface of a melt and for breaking a slag crust formed on the surface of the melt or inside the charge
OUTOKUMPU OY2 citations57
US4222786ASep 16, 1980
Ferrochromium slag for uses requiring refractoriness and mechanical strength
OUTOKUMPU OY3 citations57
US4443878AApr 17, 1984
Method of mixing a hot furnace gas with another gas before the removal of the furnace gas from the furnace and a hood therefore
OUTOKUMPU OY1 citations47
US4424959AJan 10, 1984
Brickwork construction
OUTOKUMPU OY1 citations42