Inventor
BERNARD WALTER J
17 patents
Patents
17 patentsUS4263113AApr 21, 1981
Electrochemical removal of surface copper from aluminum foil
SPRAGUE ELECTRIC CO54 citations95
US4508563AApr 2, 1985
Reducing the oxygen content of tantalum
SPRAGUE ELECTRIC CO74 citations94
US4059442ANov 22, 1977
Method for making a porous tantalum pellet
SPRAGUE ELECTRIC CO38 citations92
US4113579ASep 12, 1978
Process for producing an aluminum electrolytic capacitor having a stable oxide film
SPRAGUE ELECTRIC CO45 citations91
US4131520ADec 26, 1978
Two-stage anodization of capacitor electrodes
SPRAGUE ELECTRIC CO37 citations86
US4252575AFeb 24, 1981
Producing hydrous oxide of controlled thickness on aluminum capacitor foil
SPRAGUE ELECTRIC CO22 citations81
US4278513AJul 14, 1981
Two-stage differential anodization process
SPRAGUE ELECTRIC CO24 citations79
US4692224ASep 8, 1987
Volatile anodizing electrolytes for tantalum
SPRAGUE ELECTRIC CO11 citations73
US4437946AMar 20, 1984
Stabilization of aluminum electrolytic capacitor foil
SPRAGUE ELECTRIC CO9 citations73
US4323950AApr 6, 1982
Electrolytic capacitor with high-purity aluminized cathode
SPRAGUE ELECTRIC CO8 citations73
US4151581AApr 24, 1979
Spacer-electrolyte composite in electrolytic capacitors
SPRAGUE ELECTRIC CO6 citations73
US4159927AJul 3, 1979
Anodizing aluminum in boric acid bath containing hydroxy organic acid
SPRAGUE ELECTRIC CO17 citations72
US4337114AJun 29, 1982
Nodular copper removal from aluminum foil surfaces
SPRAGUE ELECTRIC CO6 citations68
US4204919AMay 27, 1980
Treating etched aluminum electrolytic capacitor foil
SPRAGUE ELECTRIC CO18 citations67
US4706375ANov 17, 1987
Method of forming a solid tantalum capacitor
SPRAGUE ELECTRIC CO3 citations61
US4279715AJul 21, 1981
Etching of aluminum capacitor foil
SPRAGUE ELECTRIC CO5 citations60
US4292148ASep 29, 1981
Post-treatment of etched aluminum capacitor foil
SPRAGUE ELECTRIC CO1 citations51