Inventor
HOPPE AXEL
DE4 patents
Patents
4 patentsUS4537641AAug 27, 1985
Process for producing valve-metal anodes for electrolytic capacitors
STARCK HERMANN C FA77 citations91
US4569693AFeb 11, 1986
Process for improving the flowability and increasing the bulk density of high-surface area valve metal powders
STARCK HERMANN C FA42 citations90
US4446116AMay 1, 1984
Process for recovering niobium and/or tantalum compounds from such ores further containing complexes of uranium, thorium, titanium and/or rare earth metals
STARCK HERMANN C FA32 citations88
US4548672AOct 22, 1985
Process for treating the surface of valve metals with chalcogens
STARCK HERMANN C FA23 citations80