Eiji Yamakawa

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Display apparatus and watch
- Patent number 12,140,909
- Issue date Nov 12, 2024
- Casio Computer Co., Ltd.
- Eiji Yamakawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Display apparatus and watch
- Patent number 11,796,965
- Issue date Oct 24, 2023
- Casio Computer Co., Ltd.
- Eiji Yamakawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Liquid crystal control circuit, electronic timepiece, and liquid cr...
- Patent number 11,295,686
- Issue date Apr 5, 2022
- Casio Computer Co., Ltd.
- Takahiro Ono
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Electronic device, electronic timepiece and battery charging method
- Patent number 11,258,292
- Issue date Feb 22, 2022
- Casio Computer Co., Ltd.
- Eiji Yamakawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Dot matrix display device and time display device
- Patent number 10,847,104
- Issue date Nov 24, 2020
- Kyocera Corporation
- Tomoo Kasuo
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Electronic device, electronic timepiece, display control method, an...
- Patent number 10,824,117
- Issue date Nov 3, 2020
- Casio Computer Co., Ltd.
- Eiji Yamakawa
- G02 - OPTICS
Information Patent Grant
Liquid crystal control circuit, electronic timepiece, and liquid cr...
- Patent number 10,783,845
- Issue date Sep 22, 2020
- Casio Computer Co., Ltd.
- Takahiro Ono
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Illumination device, display apparatus, and timepiece
- Patent number 9,523,960
- Issue date Dec 20, 2016
- Casio Computer Co., Ltd.
- Kei Hanzawa
- G02 - OPTICS
Information Patent Grant
Electronic timepiece including light emitting section
- Patent number 9,423,774
- Issue date Aug 23, 2016
- Casio Computer Co., Ltd.
- Eiji Yamakawa
- G04 - HOROLOGY
Information Patent Grant
Radio wave timepiece
- Patent number 8,971,155
- Issue date Mar 3, 2015
- Casio Computer Co., Ltd.
- Takashi Sano
- G04 - HOROLOGY
Information Patent Grant
Electronic member and electronic device
- Patent number 6,243,259
- Issue date Jun 5, 2001
- Casio Computer Co., Ltd.
- Eiji Yamakawa
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents

Information Patent Application
DISPLAY DEVICE, WATCH, AND DISPLAY DEVICE MANUFACTURING METHOD
- Publication number 20240310667
- Publication date Sep 19, 2024
- CASIO COMPUTER CO., LTD.
- Eiji YAMAKAWA
- G02 - OPTICS
Information Patent Application
DISPLAY APPARATUS AND WATCH
- Publication number 20240004349
- Publication date Jan 4, 2024
- CASIO COMPUTER CO., LTD.
- Eiji YAMAKAWA
- G04 - HOROLOGY
Information Patent Application
DISPLAY APPARATUS AND WATCH
- Publication number 20210263475
- Publication date Aug 26, 2021
- CASIO COMPUTER CO., LTD.
- Eiji YAMAKAWA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
LIQUID CRYSTAL CONTROL CIRCUIT, ELECTRONIC TIMEPIECE, AND LIQUID CR...
- Publication number 20200402474
- Publication date Dec 24, 2020
- CASIO COMPUTER CO., LTD.
- Takahiro ONO
- G04 - HOROLOGY
Information Patent Application
DOT MATRIX DISPLAY DEVICE AND TIME DISPLAY DEVICE
- Publication number 20200302886
- Publication date Sep 24, 2020
- CASIO COMPUTER CO., LTD.
- Tomoo KASUO
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
ELECTRONIC DEVICE, ELECTRONIC TIMEPIECE AND BATTERY CHARGING METHOD
- Publication number 20190393715
- Publication date Dec 26, 2019
- CASIO COMPUTER CO., LTD.
- Eiji YAMAKAWA
- G04 - HOROLOGY
Information Patent Application
LIQUID CRYSTAL CONTROL CIRCUIT, ELECTRONIC TIMEPIECE, AND LIQUID CR...
- Publication number 20190295486
- Publication date Sep 26, 2019
- CASIO COMPUTER CO., LTD.
- Takahiro ONO
- G04 - HOROLOGY
Information Patent Application
LIQUID CRYSTAL CONTROL CIRCUIT, ELECTRONIC TIMEPIECE, AND LIQUID CR...
- Publication number 20190295485
- Publication date Sep 26, 2019
- CASIO COMPUTER CO., LTD.
- Takahiro ONO
- G04 - HOROLOGY
Information Patent Application
ELECTRONIC DEVICE, ELECTRONIC TIMEPIECE, DISPLAY CONTROL METHOD, AN...
- Publication number 20190137944
- Publication date May 9, 2019
- CASIO COMPUTER CO., LTD.
- Eiji YAMAKAWA
- G04 - HOROLOGY
Information Patent Application
LIQUID CRYSTAL DRIVING DEVICE, ELECTRONIC WATCH, LIQUID CRYSTAL DRI...
- Publication number 20180240422
- Publication date Aug 23, 2018
- CASIO COMPUTER CO., LTD.
- Tatsuyoshi OMURA
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
DISPLAY DEVICE, DISPLAY CONTROL METHOD, AND COMPUTER-READABLE STORA...
- Publication number 20180024619
- Publication date Jan 25, 2018
- CASIO COMPUTER CO., LTD.
- Tomoo KASUO
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
ELECTRONIC TIMEPIECE INCLUDING LIGHT EMITTING SECTION
- Publication number 20150378319
- Publication date Dec 31, 2015
- CASIO COMPUTER CO., LTD.
- Eiji YAMAKAWA
- G04 - HOROLOGY
Information Patent Application
ILLUMINATION DEVICE, DISPLAY APPARATUS, AND TIMEPIECE
- Publication number 20150009783
- Publication date Jan 8, 2015
- CASIO COMPUTER CO., LTD.
- Kei HANZAWA
- G02 - OPTICS
Information Patent Application
RADIO WAVE TIMEPIECE
- Publication number 20120294126
- Publication date Nov 22, 2012
- CASIO COMPUTER CO., LTD.
- Takashi SANO
- G04 - HOROLOGY

Eiji Yamakawa

Person

Patents Grantslast 30 patents

Display apparatus and watch

Display apparatus and watch

Liquid crystal control circuit, electronic timepiece, and liquid cr...

Electronic device, electronic timepiece and battery charging method

Dot matrix display device and time display device

Electronic device, electronic timepiece, display control method, an...

Liquid crystal control circuit, electronic timepiece, and liquid cr...

Illumination device, display apparatus, and timepiece

Electronic timepiece including light emitting section

Radio wave timepiece

Electronic member and electronic device

Patents Applicationslast 30 patents

DISPLAY DEVICE, WATCH, AND DISPLAY DEVICE MANUFACTURING METHOD

DISPLAY APPARATUS AND WATCH

DISPLAY APPARATUS AND WATCH

LIQUID CRYSTAL CONTROL CIRCUIT, ELECTRONIC TIMEPIECE, AND LIQUID CR...

DOT MATRIX DISPLAY DEVICE AND TIME DISPLAY DEVICE

ELECTRONIC DEVICE, ELECTRONIC TIMEPIECE AND BATTERY CHARGING METHOD

LIQUID CRYSTAL CONTROL CIRCUIT, ELECTRONIC TIMEPIECE, AND LIQUID CR...

LIQUID CRYSTAL CONTROL CIRCUIT, ELECTRONIC TIMEPIECE, AND LIQUID CR...

ELECTRONIC DEVICE, ELECTRONIC TIMEPIECE, DISPLAY CONTROL METHOD, AN...

LIQUID CRYSTAL DRIVING DEVICE, ELECTRONIC WATCH, LIQUID CRYSTAL DRI...

DISPLAY DEVICE, DISPLAY CONTROL METHOD, AND COMPUTER-READABLE STORA...

ELECTRONIC TIMEPIECE INCLUDING LIGHT EMITTING SECTION

ILLUMINATION DEVICE, DISPLAY APPARATUS, AND TIMEPIECE

RADIO WAVE TIMEPIECE