Forward Citations = 20

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3 inventors (with patents filed for the assignee):

Hartmut H Esslinger (2 out of 70 patents)

Hao Bo Zhao (1 out of 1 patent)

Chi-Liang Chen (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 9148714 - Battery-powered sound device with mounting element made of vibration absorbing material (2015-09-29),

2. D682249 - Equipment for the recording or reproduction of sounds or pictures (2013-05-14),

3. D682248 - Equipment for the recording or reproduction of sounds or pictures (2013-05-14),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

3 Patents

#1,156 in Taipei

#3,314 in Taiwan

Taipei, Taiwan

Add-On Technology, Co. Ltd.

Forward Citations = 20

3 inventors:

Hartmut H Esslinger (2 out of 70 patents)

Hao Bo Zhao (1 out of 1 patent)

Chi-Liang Chen (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Add-On Technology, Co. Ltd.. Retrieved from https://idiyas.com/company/add-on-technology-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]