Eiji KUWAHARA

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Sound output device
- Patent number 11,503,403
- Issue date Nov 15, 2022
- Sony Corporation
- Eiji Kuwahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multiplexer
- Patent number 11,309,868
- Issue date Apr 19, 2022
- Taiyo Yuden Co., Ltd.
- Eiji Kuwahara
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Headphone and acoustic characteristic adjustment method
- Patent number 10,117,017
- Issue date Oct 30, 2018
- Sony Corporation
- Eiji Kuwahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Ladder-type filter, duplexer, and module
- Patent number 10,097,160
- Issue date Oct 9, 2018
- Taiyo Yuden Co., Ltd.
- Eiji Kuwahara
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Headphones
- Patent number 10,028,049
- Issue date Jul 17, 2018
- Sony Corporation
- Takeshi Inoue
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Acoustic wave device, transceiver device, and mobile communication...
- Patent number 9,887,686
- Issue date Feb 6, 2018
- Taiyo Yuden Co., Ltd.
- Eiji Kuwahara
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Acoustic wave device, transceiver device, and mobile communication...
- Patent number 9,853,625
- Issue date Dec 26, 2017
- Taiyo Yuden Co., Ltd.
- Eiji Kuwahara
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Headphone and acoustic characteristic adjustment method
- Patent number 9,838,777
- Issue date Dec 5, 2017
- Sony Corporation
- Eiji Kuwahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
ACOUSTIC WAVE DEVICES AND MODULES COMPRISING SAME
- Publication number 20240396527
- Publication date Nov 28, 2024
- Sanan Japan Technology Corporation
- Eiji KUWAHARA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
ELASTIC WAVE DEVICE, MODULE
- Publication number 20230101605
- Publication date Mar 30, 2023
- Sanan Japan Technology Corporation
- Eiji Kuwahara
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
MULTIPLEXER
- Publication number 20200067490
- Publication date Feb 27, 2020
- Taiyo Yuden Co., Ltd.
- Eiji KUWAHARA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
HEADPHONE AND ACOUSTIC CHARACTERISTIC ADJUSTMENT METHOD
- Publication number 20180091890
- Publication date Mar 29, 2018
- SONY CORPORATION
- EIJI KUWAHARA
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
HEADPHONES
- Publication number 20170201820
- Publication date Jul 13, 2017
- SONY CORPORATION
- Takeshi INOUE
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LADDER-TYPE FILTER, DUPLEXER, AND MODULE
- Publication number 20160359470
- Publication date Dec 8, 2016
- Taiyo Yuden Co., Ltd.
- Eiji KUWAHARA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
HEADPHONE AND ACOUSTIC CHARACTERISTIC ADJUSTMENT METHOD
- Publication number 20160295315
- Publication date Oct 6, 2016
- SONY CORPORATION
- EIJI KUWAHARA
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
ACOUSTIC WAVE DEVICE, TRANSCEIVER DEVICE, AND MOBILE COMMUNICATION...
- Publication number 20160142041
- Publication date May 19, 2016
- Taiyo Yuden Co., Ltd.
- Eiji KUWAHARA
- H03 - BASIC ELECTRONIC CIRCUITRY

Eiji KUWAHARA

Person

Patents Grantslast 30 patents

Sound output device

Multiplexer

Headphone and acoustic characteristic adjustment method

Ladder-type filter, duplexer, and module

Headphones

Acoustic wave device, transceiver device, and mobile communication...

Acoustic wave device, transceiver device, and mobile communication...

Headphone and acoustic characteristic adjustment method

Patents Applicationslast 30 patents

ACOUSTIC WAVE DEVICES AND MODULES COMPRISING SAME

ELASTIC WAVE DEVICE, MODULE

MULTIPLEXER

HEADPHONE AND ACOUSTIC CHARACTERISTIC ADJUSTMENT METHOD

HEADPHONES

LADDER-TYPE FILTER, DUPLEXER, AND MODULE

HEADPHONE AND ACOUSTIC CHARACTERISTIC ADJUSTMENT METHOD

ACOUSTIC WAVE DEVICE, TRANSCEIVER DEVICE, AND MOBILE COMMUNICATION...