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US 10,354,102 B2Granted
Ultrasonic identification devices and methods of making and using same
AssigneeClean Energy Labs, LLC
InventorJoseph F. Pinkerton
Life of this patent
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Abstract
Ultrasonic identification devices, and methods of making and use same. The present invention further relates to ultrasonic ID devices using membranes (such as membranes made of graphene or a polyester film).
Claims9
An ultrasonic identification device comprising
- (a) a substrate;
- (b) a plurality of membranes located on the substrate, wherein the membranes comprise a substance selected from the group consisting of graphene, graphene oxide, polyester films, polymer films, and combinations thereof, and
- (c) a material feature deposited on one side of each of the membranes in the plurality of membranes to form a plurality of weighted membrane drums, wherein
- (i) the plurality of the weighted membrane drums are operable to resonate in response to a first ultrasonic sound signal, and
- (ii) the resonance of the plurality of the weighted membrane drums is operable to produce a second ultrasonic sound signal.
2 more elements
Dependencies are inferred from the claim text.