For the Inventor, By the Inventor

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Zhongli, Taiwan

Ef-materials Industries Inc.

USPTO Granted Patents = 2

Trademarks = 1

Forward Citations = 3

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4 inventors (with patents filed for the assignee):

Sean Chen (2 out of 2 patents)

Radium Huang (2 out of 2 patents)

James Huang (2 out of 27 patents)

4. Jeff Han (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 10099182 - Water-proof and dust-proof membrane assembly and applications thereof (2018-10-16),

2. 8530004 - Polymeric electret film and method of manufacturing the same (2013-09-10),

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USPTO Data Jan 1 1976 - Dec 23 2025

2 Patents

#2 in Zhongli

#4,107 in Taiwan

Zhongli, Taiwan

Ef-materials Industries Inc.

Forward Citations = 3

4 inventors:

Sean Chen (2 out of 2 patents)

Radium Huang (2 out of 2 patents)

James Huang (2 out of 27 patents)

4. Jeff Han (1 out of 1 patent)

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