Thanks for your response. As you read in this press release from 1997 they INTEND TO LICENSE. Does it part of those 5 patents?

"In keeping with our OEM strategy, Norris Communications intends to license this CD-quality audio technology to manufacturers who wish to create new products or integrate the technology into existing products," said Fred Falk, Norris president. "This is the type of technology that can be incorporated into HPC (palmtop) computers to give them CD-quality audio playback without adding significant size or weight. Flashback Audio can be added to pagers, cellular phones and other types of portable consumer devices to extend their functions and use."

Nelson Chan, SanDisk vice president of marketing, said: "The Flashback Audio is an ideal application for SanDisk CompactFlash memory cards. With its small size, durability and low power requirements, CompactFlash was crucial in enabling the development of this audio device. We believe the Flashback Audio has mass popularity appeal and will be a terrific-selling consumer electronics product when it is launched."