While P2i describes its invisible "hydrophobic layer" as covering the exterior and interior of a product, HzO touts what it calls "WaterBlock" technology, which is applied to the internal circuitry of a device to protect it from moisture.

CNN: Waterproof phones and tablets make a splash

That's when researchers at Rocket Chemical Co. were trying to develop a petroleum-based substance to protect missile skins from moisture.

FORBES: Greasy Coca-Cola

Very little has changed since the early 1950s, when researchers at Rocket Chemical Co. were trying to develop a petroleum-based substance to protect missile skins from moisture.

FORBES: Johnny One-note

According to Korean news site etnews, technology that Samsung bought to help protect flexible displays from moisture and air damage is bogging down its manufacturing process.

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