H.c. Starck Gmbh

Thomas J Ryan

Prabhat Kumar

Howard V Goldberg

Paul B Queneau

Robert W Balliett

Mark Berggren

Daniel J Moynihan

Arthur H Bronstein

Brandon Hagen

Michael Greengart

Douglas A Ryan

Refractory metal pickling bath of HF/H O aqueous solution with recovery of the etched metal as a salt thereof and separation of dissolved impurities taken from the refractory metal, with avoidance of drawbacks of state of the art HF/HNO pickling solutions.

Pickling of refractory metals

Electrolytic capacitor lead wires doped with one or more interstitial elements at the surface to enhance (lower) leakage of capacitors using such lead wires.

Electrode lead wires

Refractory metal articles having hither than normal impurity levels of concentrations of additive species near the surface that promote chemically enhanced sintering without any adverse effect on function properties, including, among others, tantalum or niobium lead wires that form assemblies useful as electrolytic capacitor anodes and the like, as made by surface oxidation of the wire, embedding a wire end in a loose mass of the powder and sintering to producing assemblies of enhanced structural integrity and affording stable electrical characteristics of electrical devices including such assemblies.

Refractory metals with improved adhesion strength

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Canton, MA, United States of America

Thomas J Ryan