Yuisuke Maruyama

Follow

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Echo canceller using impulse response estimating method
- Patent number 5,289,539
- Issue date Feb 22, 1994
- NEC Corporation
- Yuisuke Maruyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Speech additive distribution equipment for conferencing system
- Patent number 4,741,025
- Issue date Apr 26, 1988
- NEC Corporation
- Yuisuke Maruyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital conference circuit
- Patent number 4,719,618
- Issue date Jan 12, 1988
- NEC Corporation
- Yasuo Itoh
- H04 - ELECTRIC COMMUNICATION TECHNIQUE