Stock material or miscellaneous articles – Circular sheet or circular blank – Recording medium or carrier
Reexamination Certificate
2008-05-20
2008-05-20
Huff, Mark F. (Department: 1795)
Stock material or miscellaneous articles
Circular sheet or circular blank
Recording medium or carrier
C428S065100
Reexamination Certificate
active
10506605
ABSTRACT:
An optical information medium having a light transmission layer obtained by curing a composition containing a urethane di(meth)acrylate (A) of the formula (I) and the other urethane di(meth)acrylate (B), and having a tensile elastic modulus of 600 to 1300 MPa at 25° C. and a light transmittance of 80% or more at wavelength of 400 nm (in the formula, R1=an alicyclic diisocyanate residue, R2=an alkylene group or an organic group containing a cycloalkyl group or ester bond, R3=H or methyl group.):
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Derwent Publications, AN 1992-360904, XP-002330390, JP 04-261418, Sep. 17, 1992.
Fujimoto Juichi
Hayama Kouji
Hirata Hideki
Komaki Tsuyoshi
Ushida Tomoki
Huff Mark F.
Mitsubishi Rayon Co. Ltd.
TDK Corporation
Verderame Anna L.
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