Inventor

YUJI TOYOTA

Inventor

Overview

14→

Patents

2021–2026

Patent span

Physics

Primary field (CPC G)

Patents· 14 as inventor

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

G03Gprimary

G03GElectrography36%

G02BOptical elements, systems or apparatus14%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein9%

H03HImpedance networks, e.g. resonant circuits9%

H10NElectric solid-state devices not otherwise provided for9%

B43LArticles for writing or drawing upon5%

C09JAdhesives5%

G03BApparatus or arrangements for taking photographs or for projecting or viewing them5%

H01LSemiconductor devices5%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h105%

PatentTitleYear

12,554,213Developing device including toner concentration sensor that detects toner concentration in developer and image forming apparatus2026 12,523,896Peeking prevention system, method of using peeking prevention system, and method of peeking prevention2026 12,455,500Whiteboard film, whiteboard, peep prevention system2025 12,398,297Polarizing film laminate2025 12,353,073Anti-peeping system, optical laminate, display device, and anti-peeping method2025 11,985,903Wiring electrode2024 11,914,312Developing device and image forming apparatus including the same2024 11,874,615Developing device including developer carrying member and containing two-component developer and image forming apparatus including the developing device2024 11,782,357Developing device and image forming apparatus including the same2023 11,650,521Developing device and image forming apparatus including the same2023 11,509,289Composite component and mounting structure therefor2022 11,314,183Developing device and image forming apparatus therewith2022 11,209,752Developing device and image forming apparatus therewith2021 11,163,243Image forming apparatus2021

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2021–2026Patents assigned to KYOCERA DOCUMENT SOLUTIONS INC (8)· patent assignee history

2021–2026Based in JP· patent location history

2022–2024Patents assigned to MURATA MANUFACTURING CO (2)· patent assignee history

2025–2026Patents assigned to NITTO DENKO CORP (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
KYOCERA DOCUMENT SOLUTIONS INC	8	2021–2026
NITTO DENKO CORP	4	2025–2026
MURATA MANUFACTURING CO	2	2022–2024

Locations

Location	Patents	Span
JP	14	2021–2026