US 12,228,536 B2
Radio frequency signaling system and curable composition
Cynthia Kutchko, Pittsburgh, PA (US); Arjen Vellinga, Amsterdam (NL); David N. Walters, Slippery Rock, PA (US); Peter L. Votruba-Drzal, Pittsburgh, PA (US); Kurt G. Olson, Gibsonia, PA (US); Sara Teixeira, Amsterdam (NL); Arnold Johan Nederlof, Santpoort-Noord (NL); Sijmen Johan Visser, Marken (NL); and Chun Yong Lee, Busan (KR)
Assigned to PPG Industries Ohio, Inc., Cleveland, OH (US)
Appl. No. 17/753,185
Filed by PPG Industries Ohio, Inc., Cleveland, OH (US)
PCT Filed Aug. 28, 2020, PCT No. PCT/US2020/048422
§ 371(c)(1), (2) Date Feb. 23, 2022,
PCT Pub. No. WO2021/041820, PCT Pub. Date Mar. 4, 2021.
Claims priority of provisional application 62/893,437, filed on Aug. 29, 2019.
Prior Publication US 2022/0276191 A1, Sep. 1, 2022
Int. Cl. G01N 27/22 (2006.01); G01F 23/263 (2022.01)
CPC G01N 27/221 (2013.01) [G01F 23/266 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radio frequency signaling system, comprising:
a curable coating composition configured to be cured to form a cured coating on a substrate body, wherein the curable coating composition comprises a non-conductive primer layer applied to at least a portion of the substrate body; and
a sensor received in the curable coating composition, wherein:
the sensor comprises circuitry forming an inductor-capacitor circuit, the circuitry having a maximum outer diameter of 10 μm-2.0 mm, and
the sensor is positioned in a layer of the curable coating composition that is above the non-conductive primer layer;
wherein the circuitry is configured to generate an electromagnetic field in response to an external radio frequency signal.