Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Reexamination Certificate
2007-01-09
2007-01-09
Peng, Kuo-Liang (Department: 1712)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
C528S032000, C528S043000
Reexamination Certificate
active
10779177
ABSTRACT:
A thermally stable polysiloxane composition is a cross-linked product of a Part A composition, of a Part B composition and a catalyst, the Part A composition being a polysiloxane having 60 to 75 percent by weight phenyl groups, the Part B composition being a polysiloxane having 50 to 80 percent by weight phenyl groups. The composition has the properties of optical clarity as measured by 90% or greater transmission of light of 400 nm wavelength in a 1.0 centimeter path, a refractive index at 589 nm of 1.545 or greater and still has 90% or greater transmission of light of 400 nm wavelength in a 1.0 centimeter path after exposure to 150° C. for 6 hours. The composition is well suited for application as an optically transmissive cover or lens for light emitting diodes and for use in other optical and related devices.
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Reichel Keith Bryan
Stone, legal representative David B.
Thomaier Robert Vincent
Young Nickelous David
NuSil Technology LLC
Peng Kuo-Liang
Szekeres Gabor L.
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