Durable retroreflective elements with a blend of beads

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11286368
APP PUB NO 20210070962A1
SERIAL NO

17099236

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The disclosed retroreflective element includes a polymeric core that is loaded with a plurality of first beads and second beads distributed at the perimeter of the core. The first beads are different than the second beads. Because of the beads in the core, the retroreflective element remains useful for returning light even after portions of the core begins to wear away. Further, when the retroreflective elements get wet, water will settle to the bottom of the perimeter of the core. Therefore, using the second beads with a refractive index suited for wet conditions, while the first beads have a refractive index suited for dry conditions allows the retroreflective element to be useful in both wet and dry conditions even while the retroreflective element wears during use.

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Patent Owner(s)

  • 3M INNOVATIVE PROPERTIES COMPANY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Budd, Kenton D Woodbury, US 80 1257
Carlson, Eugene H Apple Valley, US 17 104
Engebretson, Joseph D St. Croix Falls, US 7 49
Lieder, Stephen L Wyoming, US 12 225
Wilding, Matthew D White Bear Lake, US 10 32

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