Monthly Archives: September 2018

From Relecura: Semiconductor Sensors. Building the Wave in IoT Development

As the Internet of Things (IoT) develops, there is an increasing need to “sense” changes in the atmospherics which surround semiconductors. In other words, the working chips must get smarter and smarter and have feel! Some of that AI feel in chips is being supplied by sensing chips – the layered structure of wafers of semiconductor material which can “sense” changes in the environment it is measuring or into which it is placed. Gas sensors are particularly important and patent applications for these devices are on the upswing internationally, with Sony and Samsung leading the way. See Relecura article at
Edaphic Scientific describes a gas sensor’s performance as follows:  “Semiconductor gas sensors rely on a gas coming into contact with a metal oxide surface and then undergoing either oxidation or reduction. The absorption or desorption of the gas on the metal oxide changes either the conductivity or resistivity from a known baseline value. This change in conductivity or resistivity can be measured with electronic circuitry. Usually the change in conductivity or resistivity is a linear and proportional relationship with gas concentration. Therefore, a simple calibration equation can be established between resistivity/conductivity change and gas concentration.”
The IoT relies on smarter and smarter technology as it governs many things around us. Products will have this smarter and smarter technology and converting “sensing” into electronic circuitry will likely have a positive impact on performance, but will present new challenges as products fail and cause damage to person or property. How deep a dive will be required in products liability litigation for example when a “sensor chip” fails to sense. Sensor chips have been around for a while, but they are becoming tremendously sophisticated and integral to the virtual world in which we operate.

Posted by Henry M. Sneath, Esquire Co-Chair Litigation Practice Group and Chair of the IP Practice Group: Houston Harbaugh, P.C., 401 Liberty Avenue, Pittsburgh, Pa. 15222. Please contact Mr. Sneath at 412-288-4013 or






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