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Inventor

Yongfu Cai

Inventor
Tokyo, JP

Overview

3→
Patents
2010–2021
Patent span
Physics
Primary field (CPC G)

Patents· 3 as inventor

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

G01Rprimary
G01RMeasuring electric variables33%
A47HFurnishings for windows or doors17%
E05DHinges or suspension devices for doors, windows or wings17%
G01BMeasuring length, thickness or similar linear dimensions17%
H01FMagnets17%
PatentTitleYear
11,131,727Magnetic sensor device202111,125,839Magnetic sensor and position detection device20217,698,781'Sliding wheels for drapery'2010

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2010Patents assigned to CAI YIWEI (1)· patent assignee history
2010Based in Covina, CA, US· patent location history
2021Patents assigned to TDK CORP (2)· patent assignee history
2021Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TDK CORP22021
CAI YIWEIself12010
Locations
LocationPatentsSpan
Tokyo, JP22021
Covina, California, US12010