Naofumi Imai

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Taichung City, TW

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Patents Grantslast 30 patents

Information Patent Grant
Headphone
- Patent number 10,165,344
- Issue date Dec 25, 2018
- Sintai Optical (Shenzhen) Co., Ltd.
- Naofumi Imai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Headphone
- Patent number 10,165,351
- Issue date Dec 25, 2018
- Sintai Optical (Shenzhen) Co., Ltd.
- Naofumi Imai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Headphone device
- Patent number 10,080,076
- Issue date Sep 18, 2018
- Sintai Optical (Shenzhen) Co., Ltd.
- Takayuki Karasawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
HEADPHONE DEVICE
- Publication number 20170366893
- Publication date Dec 21, 2017
- SINTAI OPTICAL (SHENZHEN) CO., LTD.
- Takayuki Karasawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
HEADPHONE
- Publication number 20170214993
- Publication date Jul 27, 2017
- SINTAI OPTICAL (SHENZHEN) CO., LTD.
- Naofumi Imai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
HEADPHONE
- Publication number 20170214999
- Publication date Jul 27, 2017
- SINTAI OPTICAL (SHENZHEN) CO., LTD.
- Naofumi Imai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE