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DIRECTIONAL SOUND

ISSUED PATENTS

pat8849185.pdf

U.S. Patent 7,269,452

Directional Wireless Communication Systems

pat8849185.pdf

U.S. Patent 7,388,962

Directional Hearing Enhancement Systems

pat8849185.pdf

U.S. Patent 7,587,227

Directional Wireless Communication Systems

pat8849185.pdf

U.S. Patent 7,801,570

Directional Speaker for Portable Electronic Device

pat8849185.pdf

U.S. Patent 8,208,970

Directional Communication Systems

pat8849185.pdf

U.S. Patent 8,582,789

Hearing Enhancement Systems

pat8849185.pdf

U.S. Patent 8,849,185

Hybrid Audio Delivery System & Method Therefor

pat9741359.pdf

U.S. Patent 9,741,359

Hybrid Audio Delivery System & Method Therefor

pat10522165

Airplane Seats

DIRECTIONAL SOUND

ISSUED PATENTS

U.S. Patent 7,269,452

Directional Wireless Communication Systems

U.S. Patent 7,388,962

Directional Hearing Enhancement Systems

U.S. Patent 7,587,227

Directional Wireless Communication Systems

U.S. Patent 7,801,570

Directional Speaker for Portable Electronic Device

U.S. Patent 8,208,970

Directional Communication Systems

U.S. Patent 8,582,789

Hearing Enhancement Systems

U.S. Patent 8,849,185

Hybrid Audio Delivery System & Method Therefor

U.S. Patent 9,741,359

Hybrid Audio Delivery System & Method Therefor

U.S. Patent 10,522,165

Method and Apparatus for Ultrasonic Directional Sound Applicable to Vehicles

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