Voided polymer film containing layered particulates

Optical: systems and elements – Diffusing of incident light

Reexamination Certificate

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C359S518000, C359S534000

Reexamination Certificate

active

06958860

ABSTRACT:
Disclosed is an optical element comprising a polymer film containing a dispersion of minute layered particulates and microvoids.

REFERENCES:
patent: 4055377 (1977-10-01), Erickson et al.
patent: 5571362 (1996-11-01), Hachey et al.
patent: 5910858 (1999-06-01), Frey et al.
patent: 6726982 (2004-04-01), Christian et al.
patent: 6735789 (2004-05-01), Kelleher et al.

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