Alloys or metallic compositions – Osmium or iridium base
Reexamination Certificate
2006-07-07
2010-10-19
Yee, Deborah (Department: 1793)
Alloys or metallic compositions
Osmium or iridium base
C148S678000, C148S430000, C117S900000
Reexamination Certificate
active
07815849
ABSTRACT:
An iridium alloy is produced having at least 85% by weight iridium, at least 0.005% by weight molybdenum, 0.001 to 0.6% by weight hafnium and, optionally, rhenium, the sum of molybdenum and hafnium being between 0.002 and 1.2% by weight. The iridium alloy is produced in a process, in which an IrMo and an IrHf master alloy, respectively, are created in an electric arc and immersed into an iridium melt, optionally together with Re.
REFERENCES:
patent: 3918965 (1975-11-01), Inouye et al.
patent: 4444728 (1984-04-01), Lanam et al.
patent: 10-259435 (1998-09-01), None
patent: 2004/007782 (2004-01-01), None
Machine-English translation of Japanese patent 10-259435, Furuya Kinzoku et al., Sep. 29, 1998.
Fischer Bernd
Koch Michael
Lupton David Francis
Manhardt Harald
Mueller Tobias
Panitch Schwarze Belisario & Nadel LLP
W.C. Heraeus GmbH
Yee Deborah
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