Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Heat and pressure simultaneously to effect sintering
Reexamination Certificate
2011-01-18
2011-01-18
Le, Emily M (Department: 1734)
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Heat and pressure simultaneously to effect sintering
C419S008000, C425S078000
Reexamination Certificate
active
07871563
ABSTRACT:
Disclosed in this specification is a process for refurbishing a spent sputtering target. The process includes the step of applying sufficient heat and axial force to the filled sputtering target to hot press the filled sputtering target such that the powdered metal fuses with the un-sputtered metal, producing a refurbished target. The process may be used to refurbish precious metal targets, such as ruthenium targets.
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Acker Robert
Ganguly Adrish
Willson Matthew T.
Hiscock & Barclay LLP
Le Emily M
Lee Rebecca
Williams Advanced Materials, Inc.
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