Koji TOSHIKAWA

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Saitama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Piezoelectric device and manufacturing method of the same
- Patent number 11,824,516
- Issue date Nov 21, 2023
- Nihon Dempa Kogyo Co., Ltd.
- Kenji Shimao
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Crystal unit and manufacturing method thereof
- Patent number 10,840,882
- Issue date Nov 17, 2020
- Nihon Dempa Kogyo Co., Ltd.
- Koji Toshikawa
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Crystal unit
- Patent number 10,771,038
- Issue date Sep 8, 2020
- Nihon Dempa Kogyo Co., Ltd.
- Koji Toshikawa
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
QUARTZ-CRYSTAL VIBRATING PIECE AND QUARTZ CRYSTAL DEVICE USING THE...
- Publication number 20240146284
- Publication date May 2, 2024
- NIHON DEMPA KOGYO CO., LTD.
- Koji TOSHIKAWA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
PIEZOELECTRIC DEVICE AND MANUFACTURING METHOD OF THE SAME
- Publication number 20210135650
- Publication date May 6, 2021
- NIHON DEMPA KOGYO CO., LTD.
- KENJI SHIMAO
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
CRYSTAL UNIT
- Publication number 20190326876
- Publication date Oct 24, 2019
- NIHON DEMPA KOGYO CO., LTD.
- Koji TOSHIKAWA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
CRYSTAL UNIT AND MANUFACTURING METHOD THEREOF
- Publication number 20190326882
- Publication date Oct 24, 2019
- NIHON DEMPA KOGYO CO., LTD.
- Koji TOSHIKAWA
- H01 - BASIC ELECTRIC ELEMENTS