% Expired Patents = 28.6

Trademarks = 4

Forward Citations = 23

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4 inventors (with patents filed for the assignee):

Chiang-Cheng Huang (4 out of 4 patents)

Chien-Chung Sun (4 out of 4 patents)

Chun-Min Chang (1 out of 2 patents)

4. Shu-Chen Huang (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 8471427 - Motor magnetic pole assembly and motor manufacturing method using the same (2013-06-25),

2. 7876560 - Electronic device (2011-01-25),

3. 7485993 - Direct current brushless vibration motor (2009-02-03),

4. 7021366 - Heat dissipation apparatus and method (2006-04-04),

5. 6812607 - Auxiliary coupling disk for miniature vibration voice-coil motors (2004-11-02),

6. 6707223 - Stator assembly structure (2004-03-16),

7. 6573627 - DC brushless voice-coil vibration motor (2003-06-03),

Company Overview

Risun Expanse Corp. is a global leader in the development and manufacturing of advanced technology solutions for various industries. With a strong focus on innovation and sustainability, Risun Expanse Corp. offers a wide range of products and services to meet the diverse needs of its clients. From renewable energy solutions to aerospace components, Risun Expanse Corp. is committed to delivering high-quality, cutting-edge solutions that drive progress and create value for its customers.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

7 Patents

#576 in Taipei

#1,852 in Taiwan

Taipei, Taiwan

Risun Expanse Corp.

Forward Citations = 23

4 inventors:

Chiang-Cheng Huang (4 out of 4 patents)

Chien-Chung Sun (4 out of 4 patents)

Chun-Min Chang (1 out of 2 patents)

4. Shu-Chen Huang (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Risun Expanse Corp.. Retrieved from https://idiyas.com/company/risun-expanse

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]