Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Adaptive differential pulse code modulation (ADPCM) systems

Adaptive differential pulse code modulation (ADPCM) systems

US Patent 4860313 · Granted Aug 22, 1989

Estimated economic value: $622,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Mobile inhaler and a container for using therewith2025
Multiport electronic device2022
Controlled power adapter2019
Controlled power adapter and cable2018
Magnetic induction devices and methods for producing them2012
Method and apparatus for access control to language learning system2011
Electromagnetic interface module for balanced data communication2007
Access control for interactive learning system2007
Computerized system for teaching speech2002
Apparatus for interactive language training1998
Computerized system for teaching speech1996
Sound synthesizer employing noise generator1993