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Inventor

EIJI YAMAKAWA

Inventor
JP

Overview

4→
Patents
2022–2024
Patent span
Physics
Primary field (CPC G)

Patents· 4 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G04Gprimary
G04GElectronic time-pieces25%
G04CElectromechanical clocks or watches19%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution19%
G04BMechanically-driven clocks or watches13%
H02SGeneration of electric power by conversion of infrared radiation, visible light or ultraviolet light, e.g. using photovoltaic [pv] modules13%
G09GArrangements or circuits for control of indicating devices using static means to present variable information6%
H02JElectric power networks6%
PatentTitleYear
12,140,909Display apparatus and watch202411,796,965Display apparatus and watch202311,295,686Liquid crystal control circuit, electronic timepiece, and liquid crystal control method202211,258,292Electronic device, electronic timepiece and battery charging method2022

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2022–2024Patents assigned to CASIO COMPUTER CO LTD (4)· patent assignee history
2022–2024Based in JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CASIO COMPUTER CO LTD42022–2024
Locations
LocationPatentsSpan
JP42022–2024