Semiconductor device manufacturing: process – Coating with electrically or thermally conductive material – To form ohmic contact to semiconductive material
Reexamination Certificate
2007-01-30
2007-01-30
Dang, Phuc T. (Department: 2818)
Semiconductor device manufacturing: process
Coating with electrically or thermally conductive material
To form ohmic contact to semiconductive material
C438S031000, C528S171000
Reexamination Certificate
active
10618998
ABSTRACT:
A polysulfone composition is provided having a total luminous light transmittance of 84% or greater when measured on 0.1 inch thick specimens using ASTM D-1003. The specimens also meet at least one of the following two conditions: 1) a yellowness index (YI) of less than about 5.0 as measured according to ASTM D-1925 on 0.1 inch thick specimens, or 2) a color factor (CF) of less than about 25, wherein CF is defined by the following equation:in-line-formulae description="In-line Formulae" end="lead"?CF=270[(x+y)sample−(x+y)air]/tin-line-formulae description="In-line Formulae" end="tail"?wherein x and y are chromaticity coordinates measured in transmittance mode and t is sample thickness in inches. Another polysulfone composition is provided comprising a polysulfone, an organic phosphorous-containing melt stabilizer, and at least one of the following additives: a blue to violet dye, and an organic optical brightener. The polysulfone composition of the present invention is used to form transparent molded articles such as ophthalmic lenses.
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Dang Phuc T.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Solvay Advanced Polymers, L.L.C.
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