Assignee
PECHINEY
FR18 patents
Top patents by PatentIndex Score
US4431491AFeb 14, 1984
Process and apparatus for accurately controlling the rate of introduction and the content of alumina in an igneous electrolysis tank in the production of aluminium
PECHINEY28 citations86
US4456480AJun 26, 1984
Process for purifying metals by segregation
PECHINEY39 citations81
US4747732AMay 31, 1988
Closed apparatus with potential fluidization for horizontally conveying powder material in a dense bed
PECHINEY21 citations80
US6669063B1Dec 30, 2003
Method for irreversibly fixing a cap on a container head enabling a limited rotation of said cap on said head
PECHINEY18 citations79
US4588485AMay 13, 1986
Process for the production of a metal by electrolyzing halides in a molten salt bath, comprising a simultaneous and continuous double deposit
PECHINEY21 citations78
US4575450AMar 11, 1986
Process for obtaining extruded semifinished products from high resistance aluminum alloy powder
PECHINEY8 citations72
US4770750ASep 13, 1988
Process for producing transition metal powders by electrolysis in melted salt baths
PECHINEY7 citations71
US4451439AMay 29, 1984
Process for the purification of solutions containing a sodium or potassium carbonate, sulphate, and possibly hydroxide, and at least one of the metals vanadium, uranium and molybdenum
PECHINEY12 citations70
US4838988AJun 13, 1989
Process for obtaining crystals of intermetallic compounds, in particular isolated monocrystals, by cooling alloys in the molten state
PECHINEY17 citations69
US4764223AAug 16, 1988
Process for the manufacture of a rough-shaped, cold-rolled cladding tube of zirconium alloy
PECHINEY13 citations65
US4898646AFeb 6, 1990
Process for identifying Al alloys by electrochemical means
PECHINEY2 citations59
US4686025AAug 11, 1987
Apparatus for the production of a metal by electrolyzing halides in a molten salt bath, by a simultaneous continuous double deposit
PECHINEY6 citations58
US4657643AApr 14, 1987
Process for continuously controlling the proportion of metal dissolved in a bath of molten salts and the application thereof to the continuous feed of an electrolysis cell with salts of said metal
PECHINEY0 citations48
US4847495AJul 11, 1989
Method of quantitative analysis by means of the mean atomic number of phases containing a light element using a scanning microscope and an image analyser
PECHINEY1 citations43
US4865665ASep 12, 1989
Metal alloy with large lattice spacing
PECHINEY0 citations42
US4450143AMay 22, 1984
Process for reducing the organic solvent losses in the treatment of a suspension resulting from the acid attack on an ore
PECHINEY0 citations42
US4675084AJun 23, 1987
Process for improving the purity of transition metals produced by electrolysis of halides thereof in a bath of molten salts
PECHINEY0 citations38
US4444585AApr 24, 1984
Process for producing metals in a very high state of purity in respect of eutectic elements
PECHINEY0 citations32