US Patent 11665871 Electromagnetic pulse resistant device casing

An EMP-resistant (electromagnetic pulse-resistant) case for portable electronic devices is provided. The case includes a conductive external housing configured to enclose the electronic device. The housing includes a lower housing having a continuous connection surface. The housing also includes an upper housing having a continuous connection surface. The lower and upper housing are configured to releasably engage at the continuous connection surface. The housing includes a conductive gasket positioned at the continuous connection surface between the upper and lower housing. The case also includes a first insulative layer at least partially covering the inside surface of the upper and lower housing.