Stock material or miscellaneous articles – Circular sheet or circular blank
Reexamination Certificate
2011-03-22
2011-03-22
Mulvaney, Elizabeth (Department: 1785)
Stock material or miscellaneous articles
Circular sheet or circular blank
C428S064400, C428S064500, C430S270110, C430S270130
Reexamination Certificate
active
07910190
ABSTRACT:
A thin film for a reflection film or a semi-transparent reflection film, which has a compound phase comprising at least one selected from the group consisting of a nitride, an oxide, a complex oxide, a nitroxide, a carbide, a sulfide, a chloride, a silicide, a fluoride, a boride, a hydride, a phosphide, a selenide and a telluride of gallium, palladium or copper, dispersed in a matrix formed of silver or a silver alloy. The compound phase in the thin film may include at least one compound selected from the group consisting of nitride, oxide, complex oxide, nitroxide, carbide, sulfide, chloride, silicide, fluoride, boride, hydride, phosphide, selenide and telluride of silver. The thin film of the present invention minimizes the deterioration of the reflectance even after a long period of use, and can prolong the life of various devices which use the thin film as a reflection film, such as an optical recording medium and a display. The thin film can be also applied to a semi-reflective/semi-transparent film used in the optical recording medium.
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Obata Tomokazu
Yanagihara Hiroshi
Mulvaney Elizabeth
Roberts & Roberts, LLP
Tanaka Kinkinzoku Kogyo K.K.
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