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"Officials at Toshiba were not immediately available for comment. So it remains unclear exactly when the company hopes to commercialize the technology, in which densities, or what challenges it still faces, such as endurance and comparable performance in read/write times.

The SONOS formula has been around for years and is currently being pursued by other companies such as Motorola Corp. and Cypress Semiconductor as a better means for embedding flash than the typical floating-gate structure."