Alloys or metallic compositions – Silver base
Reexamination Certificate
2004-12-09
2009-08-18
King, Roy (Department: 1793)
Alloys or metallic compositions
Silver base
C148S430000, C428S064200
Reexamination Certificate
active
07575714
ABSTRACT:
The present invention is a silver alloy including silver as the main component and at least one rare-earth element as a first dopant element, and excellent in reflectance maintenance property. In the present invention, the first dopant element is preferably samarium, neodymium, lanthanum, cerium, ytterbium, terbium, dysprosium, holmium, erbium, thulium, europium, and gadolinium. Also, in the present invention, the silver alloy preferably includes, as a second dopant element, at least one element selected from copper, manganese, silicon, chromium, nickel, cobalt, yttrium, iron, scandium, zirconium, niobium, molybdenum, tantalum, tungsten, platinum, gold, rhodium, iridium, palladium, indium, tin, lead, aluminum, calcium, gallium, bismuth, antimony, strontium, hafnium, and germanium.
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Obata Tomokazu
Yanagihara Hiroshi
Fogarty Caitlin
King Roy
Roberts & Roberts, LLP
Tanaka Kikinzoku Kogyo K.K.
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