% Expired Patents = 25.0

Forward Citations = 1

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3 inventors (with patents filed for the assignee):

Manabu Shiraki (4 out of 49 patents)

Tsutomu Shiraki (2 out of 2 patents)

Toru Ikeuchi (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. 11316396 - Coil body (2022-04-26),

2. 10862381 - Rotary electrical machine (2020-12-08),

3. 10651702 - Coreless rotating electrical machine with stator including cylindrical coil and cooling method therefor (2020-05-12),

4. 10637319 - Coreless rotating electrical machine with stator including cylindrical coil and cooling method therefor (2020-04-28),

Company Overview

Coreless Motor Co., Ltd. is a leading manufacturer of coreless motors for various industries. With years of experience and expertise in motor technology, we provide high-quality, reliable and efficient coreless motors that meet the diverse needs of our customers. Our products are used in a wide range of applications, including drones, robotics, medical devices, and more. We are committed to delivering innovative solutions that drive success for our clients.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

4 Patents

#266 in Kanagawa

#7,579 in Japan

Kanagawa, Japan

Coreless Motor Co., Ltd.

Forward Citations = 1

3 inventors:

Manabu Shiraki (4 out of 49 patents)

Tsutomu Shiraki (2 out of 2 patents)

Toru Ikeuchi (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Coreless Motor Co., Ltd.. Retrieved from https://idiyas.com/company/coreless-motor-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]