US Patent 7298533 Optical films for creating unique optical effects
Patent 7298533 was granted and assigned to WAVEFRONT TECHNOLOGY INC on November, 2007 by the United States Patent and Trademark Office.
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Patent abstract
An optical layer comprises a sheet of material having a surface. The surface comprises a plurality of optical elements. The optical elements are comprised of microscopic patterns in the surface that cooperate to produce an image. Each of the elements has a focal length. At least some of the focal lengths are significantly different from other focal lengths, such that some portions of the surface appear to be closer to a viewer than other portions of the surface.
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US Patent 07298533 Optical films for creating unique optical effects US Patent 7298533 Optical films for creating unique optical effects
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Patent Number
0729853300
Patent Number
729853300
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Is a
Current Assignee
Patent Jurisdiction
Patent Number
072985330
Date of Patent
November 20, 2007
0Patent Application Number
108058500
Date Filed
March 22, 2004
0Official Website
Patent Primary Examiner
Edits on 23 Sep, 2022
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
072985330
Date of Patent
November 20, 2007
0Patent Application Number
108058500
Date Filed
March 22, 2004
0Official Website
Patent Primary Examiner
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US Patent 07298533 Optical films for creating unique optical effects
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07298533
Date of patent
November 20, 2007
Patent application number
10805850
Date Filed
March 22, 2004
Patent primary examiner
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