Inventor

TAKEHIRO YAMADA

Inventor

Overview

2→

Patents

2023–2025

Patent span

Physics

Primary field (CPC G)

Patents· 2 as inventor

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

G02Fprimary

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein50%

E06BFixed or movable closures for openings in buildings, vehicles, fences or like enclosures in general, e.g. doors, windows, blinds, gates25%

G01NInvestigating or analysing materials by determining their chemical or physical properties25%

PatentTitleYear

12,228,834Light control device, management method for light control device, and production method for light control device2025 11,686,965Light control sheet, light control device, and method of controlling the light control sheet2023

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2023Patents assigned to TOPPAN INC (1)· patent assignee history

2023–2025Based in JP· patent location history

2025Patents assigned to TOPPAN PRINTING CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TOPPAN INC	1	2023
TOPPAN PRINTING CO LTD	1	2025

Locations

Location	Patents	Span
JP	2	2023–2025