Assignee
CRA SERVICES
AU13 patents
Top patents by PatentIndex Score
US5489325AFeb 6, 1996
Process for producing metals and metal alloys in a smelt reduction vessel
CRA SERVICES47 citations89
US5302184AApr 12, 1994
Manufacture of ferroalloys using a molten bath reactor
CRA SERVICES33 citations85
US4951825AAug 28, 1990
Apparatus for classifying particulate material
CRA SERVICES51 citations85
US5647888AJul 15, 1997
Process for producing metals and metal alloys in a smelt reduction vessel
CRA SERVICES26 citations84
US5260040ANov 9, 1993
Extraction and recovery of gold
CRA SERVICES23 citations80
US5088331AFeb 18, 1992
Apparatus for measuring a mass stream
CRA SERVICES8 citations73
US4741770AMay 3, 1988
Zinc smelting process using oxidation zone and reduction zone
CRA SERVICES23 citations73
US5316268AMay 31, 1994
Method for increasing the durability of refractory vessel linings
CRA SERVICES8 citations71
US5198019AMar 30, 1993
Manufacture of iron and steel in a duplex smelter and solid state oxide suspension prereducer
CRA SERVICES9 citations67
US5201940AApr 13, 1993
Pre-heating and pre-reduction of a metal oxide
CRA SERVICES9 citations62
US5227116AJul 13, 1993
Manufacture of iron and steel in a duplex smelter and solid state oxide suspension prereducer
CRA SERVICES3 citations56
US5364446ANov 15, 1994
Heating and treatment of particulate material
CRA SERVICES4 citations55
US5262136ANov 16, 1993
Recovery of gold and silver from complex refractory sulphide ores by cyanidisation and oxidation with peroxides
CRA SERVICES3 citations50