US 9,957,592 B2Granted

Tantalum based alloy that is resistant to aqueous corrosion

AssigneeH.C. Starck GmbH

InventorsPaul R. Aimone, Evan Hinshaw

Life of this patent

Estimating the term…

Abstract

A tantalum or tantalum alloy which contains pure or substantially pure tantalum and at least one metal element selected from the group consisting of Ru, Rh, Pd, Os, Ir, Pt, Mo, W and Re to form a tantalum alloy that is resistant to aqueous corrosion. The invention also relates to the process of preparing the tantalum alloy.

Claims6

Dependent claims

A tantalum alloy resistant to aqueous corrosion and consisting essentially of Ta-3W—X, wherein (i) X is at least one of Ru or Pd, and (ii) X is present in an amount of at least 50 ppm and at most 10,000 ppm.

Dependencies are inferred from the claim text.

Facts

Application: 15/643,980Filed 7 Jul 2017 · continuation
Priority: 27 Apr 2007
Published: US 2017/0342526 A130 Nov 2017
Granted: 1 May 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

C22C 27/02
Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00: alloys based on vanadium, niobium, or tantalum
C22B 9/20
Remelting metals: arc remelting
C22B 9/22
Remelting metals: with heating by wave energy or particle radiation
C22B 34/24
Obtaining niobium, tantalum or vanadium: obtaining niobium or tantalum

Family

Application60/914,474Us provisional application · filed 27 Apr 2007
Application12/109,765Parent of this continuation · filed 25 Apr 2008
US 2017/0342526 A1Pre-grant publication · published 30 Nov 2017
US 9,725,793 B2Parent of this continuation
US 2008/0267809 A1Published application
US 9,957,592 B2This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

patentgrep

Loading patent…

patentgrepSearch patents

Back to results