	US 12,222,073 B1
	Interrogation of temperature sensitive coatings on fuel tank exterior
Parker Bryant, Hollister, CA (US); Arnab Chatterjee, Cirencester (GB); and Aritra Dalal, Cirencester (GB)
Assigned to ZEROAVIA, INC., Hollister, CA (US)
Filed by ZeroAvia, Inc., Hollister, CA (US)
Filed on Apr. 19, 2024, as Appl. No. 18/641,243.
Int. Cl. F17C 5/06 (2006.01); F17C 5/00 (2006.01); G01K 11/125 (2021.01)

CPC F17C 5/007 (2013.01) [F17C 5/06 (2013.01); G01K 11/125 (2013.01); F17C 2221/012 (2013.01); F17C 2223/0123 (2013.01); F17C 2250/03 (2013.01); F17C 2250/0404 (2013.01); F17C 2250/0636 (2013.01); F17C 2265/065 (2013.01); F17C 2270/0171 (2013.01); F17C 2270/0189 (2013.01)]

20 Claims

1. A system for controlling gaseous hydrogen (GH₂) refueling of a GH₂vehicle, wherein a vehicle fuel tank is refilled with GH₂from an external supply tank, said system comprising an unpowered temperature sensor comprising a patch or a cell of a temperature-dependent reflectivity material on an exterior of the vehicle fuel tank, and a sensor package comprising an electromagnetic radiation emitting system and a radiation detection system positioned remote from the vehicle tank being filled, wherein the sensor package is located on or adjacent an external refueling device with a line of sight to the unpowered temperature sensor patch or cell.