Prismatic retroreflective article and method

Details Prismatic retroreflective article and method Prismatic retroreflective article and method

2007-03-27

2007-03-27

Cherry, Euncha (Department: 2872)

Optical: systems and elements

Signal reflector

3-corner retroreflective

Reexamination Certificate

active

11023857

ABSTRACT:
A prismatic retroreflective article has a transparent body portion and a layer of internally reflecting cube-corner optical elements having an open air-exposed rear surface at least a portion of which is more hydrophobic, more oleophobic, or both more hydrophobic and more oleophobic than the underlying cube-corner optical element. The article may be made by providing a transparent body portion bearing a layer of internally reflecting open air-exposed cube-corner optical elements; treating or coating at least a portion of the cube-corner elements to make the treated or coated portion more hydrophobic, more oleophobic, or both more hydrophobic and more oleophobic than the underlying cube-corner optical elements; and leaving such treated or coated portion exposed to the open air.

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Chester A. Bacon, Jr., U.S. Appl. No. 60/639,713, “Prismatic Retroreflective Article with Fluorine- or Silicon-containing Prisms”, filed Dec. 28, 2004.
Chester A. Bacon, Jr., U.S. Appl. No. 11/319,965, “Prismatic Retroreflective Article with Fluorine- or Silicon-containing Prisms”, filed Dec. 28, 2005.

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