% Expired Patents = 33.3

Forward Citations = 2

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2 inventors (with patents filed for the assignee):

Megumi Miyagawa (3 out of 3 patents)

Keiko Kondo (3 out of 4 patents)

3 patents: Sort by Forward Citations

1. 9803733 - Rotation device and power supply system (2017-10-31),

2. 9236779 - Rotation maintaining device (2016-01-12),

3. 8604628 - Rotation device (2013-12-10),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

3 Patents

#3,547 in Tokyo

#8,929 in Japan

Tokyo, Japan

Simple Tokyo Co., Ltd.

Forward Citations = 2

2 inventors:

Megumi Miyagawa (3 out of 3 patents)

Keiko Kondo (3 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Simple Tokyo Co., Ltd.. Retrieved from https://idiyas.com/company/simple-tokyo-company

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]