Kazuma Fujioka

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Patents Grantslast 30 patents

Information Patent Grant
Loudspeaker and method of manufacturing loudspeaker
- Patent number 11,153,689
- Issue date Oct 19, 2021
- PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Takuji Miyamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Loudspeaker and loudspeaker structure
- Patent number 10,085,079
- Issue date Sep 25, 2018
- PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Hitoshi Sato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
LOUDSPEAKER
- Publication number 20230319482
- Publication date Oct 5, 2023
- Panasonic Intellectual Property Management Co., Ltd.
- Kazuma FUJIOKA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LOUDSPEAKER AND METHOD OF MANUFACTURING LOUDSPEAKER
- Publication number 20200245072
- Publication date Jul 30, 2020
- Panasonic Intellectual Property Management Co., Ltd.
- Takuji MIYAMOTO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE