IP Library › Granted Patent US 9,725,793
Granted Patent B2
US 9,725,793 · App. 12/109,765 · Granted Aug 8, 2017

Tantalum based alloy that is resistant to aqueous corrosion

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Quick Facts
Patent No.
US 9,725,793
App. No.
12/109,765
Granted
Aug 8, 2017
Kind
B2
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, Jr, 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.

Claims (4)

1. A tantalum alloy resistant to aqueous corrosion and consisting essentially of Ta-3W and Pt, wherein the Pt is present in an amount of at least 1,000 ppm and at most 2,000 ppm.

2. A tantalum alloy resistant to aqueous corrosion and consisting essentially of Ta-3W and Pt, wherein the Pt is present in an amount of 2,000 ppm.

3. A tantalum alloy resistant to aqueous corrosion and consisting essentially of Ta-3W and Pt, wherein (i) the tantalum alloy consists of Ta-3W and Pt, and (ii) the Pt is present in an amount of at least 1,000 ppm and at most 2,000 ppm.

4. A tantalum alloy resistant to aqueous corrosion and consisting essentially of Ta-3W and Pt, wherein (i) the tantalum alloy consists of Ta-3W and Pt, and (ii) the Pt is present in an amount of 2,000 ppm.

Assignments (7)
CHANGE OF NAME Recorded Apr 5, 2022
From: H.C. STARCK INC.
To: MATERION NEWTON INC.
Reel/Frame 059596/0925 →
RELEASE OF SECURITY INTEREST Recorded Nov 2, 2021
From: GLAS TRUST CORPORATION LIMITED
To: H.C. STARCK INC.
Reel/Frame 058768/0827 →
RELEASE OF SECURITY INTEREST Recorded Nov 2, 2021
From: GLAS TRUST CORPORATION LIMITED
To: H.C. STARCK INC.
Reel/Frame 058769/0242 →
RELEASE OF SECURITY INTEREST Recorded Nov 1, 2021
From: GLAS TRUST CORPORATION LIMITED
To: H.C. STARCK INC.
Reel/Frame 057986/0378 →
RELEASE OF SECURITY INTEREST Recorded Nov 1, 2021
From: GLAS TRUST CORPORATION LIMITED
To: H.C. STARCK INC.
Reel/Frame 057986/0362 →
SECURITY INTEREST Recorded Nov 1, 2021
From: H.C. STARCK INC.
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 057978/0970 →
RELEASE OF SECURITY INTEREST Recorded Nov 1, 2021
From: GLAS TRUST CORPORATION LIMITED
To: H.C. STARCK INC.
Reel/Frame 057986/0057 →