Masayasu Matsumoto

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Patents Grantslast 30 patents

Information Patent Grant
Perlite sound absorbing plate and sound insulating wall composed of...
- Patent number 4,160,491
- Issue date Jul 10, 1979
- Bridgestone Tire Co., Ltd.
- Masayasu Matsumoto
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Device for controlling a propagation direction of noise
- Patent number 4,158,401
- Issue date Jun 19, 1979
- Bridgestone Tire Company Limited
- Masayasu Matsumoto
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Noise control devices
- Patent number 4,156,476
- Issue date May 29, 1979
- Bridgestone Tire Company Limited
- Masayasu Matsumoto
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Sound absorbing body
- Patent number 4,113,053
- Issue date Sep 12, 1978
- Bridgestone Tire Company Limited
- Masayasu Matsumoto
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES