Susumu Fujiwara

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Audio system for elevator
- Patent number 11,751,001
- Issue date Sep 5, 2023
- Mitsubishi Electric Corporation
- Susumu Fujiwara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Sound control unit and sound system
- Patent number 7,050,594
- Issue date May 23, 2006
- Mitsubishi Denki Kabushiki Kaisha
- Tsuyoshi Nakada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Speaker
- Patent number 7,006,640
- Issue date Feb 28, 2006
- Mitsubishi Denki Kabushiki Kaisha
- Daisuke Arai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
AUDIO SYSTEM FOR ELEVATOR
- Publication number 20230060349
- Publication date Mar 2, 2023
- Mitsubishi Electric Corporation
- Susumu FUJIWARA
- B66 - HOISTING LIFTING HAULING
Information Patent Application
Speaker
- Publication number 20040151339
- Publication date Aug 5, 2004
- Daisuke Arai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Sound control unit and sound system
- Publication number 20030021427
- Publication date Jan 30, 2003
- Tsuyoshi Nakada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE