US Patent No: 7,681,347
Number of patents in Portfolio can not be more than 2000
Edge lit sign with illuminated image
Stats
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Mar 23, 2010
Issued date -
Jun 7, 2006
filing date -
11/448,187
serial no -
In Force
status
Importance
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Abstract
A sign is edge lit and illuminated by an array of light emitting diodes disposed along an edge of a light transmissive panel. A light diffusion surface, which can be formed by a series of serrations on the panel edge, disperses light from the discrete light emitting diodes in the array. A geometric figure, which can be text or graphics or both is formed on one face of the panel by grooves, which redirect diffused light so that an illuminated image, corresponding to the geometric figure, can be seen on the front of the panel. The grooves forming the figure and the light diffusion surface comprise parts of a one-piece panel, and the grooves and the light diffusion surface can be formed when the panel is injection molded.
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First Claim
Related Publications
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International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 6,023,869 Illuminated sign | 26 | 1998 | |
| 6,076,294 Illuminated sign | 22 | 1999 | |
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| 6,079,838 Light emitting panel assemblies | 83 | 1997 | |
| 6,712,481 Light emitting panel assemblies | 62 | 1999 | |
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| 5,964,051 Internally illuminated sign | 31 | 1997 | |
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| 5,433,024 Edge-lighted display | 25 | 1993 | |
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| 6,615,520 Lighted article with brightly illuminated indicia and method of fabricating same | 8 | 2001 | |
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| 6,981,784 Side projecting LED signal | 22 | 2003 | |
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| 4,967,317 Exit sign | 47 | 1988 | |
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| 5,027,258 Display unit | 113 | 1990 | |
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| 5,178,447 Edge light panel | 64 | 1991 | |
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| 6,824,286 Surface light source | 3 | 2003 | |
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| 4,521,835 Flexible elongated lighting system | 62 | 1983 | |
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| 5,036,248 Light emitting diode clusters for display signs | 124 | 1990 | |
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| 6,691,443 Alpha-numeric/graphic display board illuminator | 6 | 2002 | |
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| 6,481,130 Light emitting diode linear array with lens stripe for illuminated signs | 43 | 2000 | |
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| 6,895,705 Light panel | 4 | 2003 | |
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| 6,644,823 Spread illumination apparatus having trapezoidally-shaped grooves | 11 | 2001 | |
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| 6,331,915 Lighting element including light emitting diodes, microprism sheet, reflector, and diffusing agent | 65 | 2000 | |
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| 6,860,628 LED replacement for fluorescent lighting | 120 | 2002 | |
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| 6,026,602 Apparatus and method of indirectly illuminating a sign | 22 | 1997 | |
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| 6,296,376 Led lamp having a prismatically-cut modifier | 57 | 1999 | |
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| 6,341,440 Multi-function signboard | 11 | 1999 | |
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| 6,042,248 LED assembly for illuminated signs | 49 | 1997 | |
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| 5,788,356 Surface light source device of side light type | 19 | 1996 | |
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| 4,811,507 Apparatus for the display of illuminated translucent documents | 88 | 1987 | |
| 4,947,300 Character and numeral displaying device | 20 | 1989 | |
| 5,276,591 Sign with indirect illumination from light emitting diodes | 33 | 1992 | |
| 5,636,914 Illuminated panel device | 8 | 1994 | |
| 6,308,444 Light illuminated display board and lampshade using light refraction and reflection effect of transparent acrylic plastic plates | 19 | 2000 | |
| 6,481,131 LED illuminated plaque | 11 | 2001 | |
| 6,530,164 Luminous diffused light panel with low energy consumption and limited thickness | 19 | 2001 | |
| 6,705,033 LED-illuminated outdoor sign | 9 | 2002 | |
| 7,024,809 Composite panel display by refracted light | 8 | 2003 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Sep 23, 2013 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Sep 23, 2017 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 23, 2021 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |