Enter assignee name

% Expired Patents = 44.4

EPO Patents = 1

Trademarks = 1

Forward Citations = 14

Loading Chart...

4 inventors (with patents filed for the assignee):

Hsi-hsien Chen (5 out of 8 patents)

Hsi-Hsien Chen (2 out of 2 patents)

James Lee (1 out of 1 patent)

4. Chun-Mu Huang (1 out of 1 patent)

5. Hsi-Hsien Chen (0 patent)

9 patents: Sort by Forward Citations

1. 11121678 - Vacuum tube amplification system capable of reducing residual noise and a grounding method thereof (2021-09-14),

2. 10938364 - Vacuum tube subwoofer extraction circuit system (2021-03-02),

3. 10924854 - Three-piece extensible movable soundbox (2021-02-16),

4. 10856082 - Audio system with sound-field-type nature sound effect (2020-12-01),

5. 10755885 - Vacuum tube rear device (2020-08-25),

6. D893460 - Vacuum tube speaker (2020-08-18),

7. 10727792 - Vacuum tube and transistor amplifier natural sound field tone dividing system (2020-07-28),

8. 6442505 - Electronic trip meter for a bicycle (2002-08-27),

9. 5481901 - Device for demonstrating and testing electronic meters for bicycles (1996-01-09),

Echowell Electronic Co., Ltd is a leading manufacturer of electronic health and fitness products. Established in 1981, Echowell is dedicated to providing high-quality and innovative solutions for cyclists, runners, and fitness enthusiasts. Their product range includes cycling computers, heart rate monitors, pedometers, and more. With a commitment to technology and customer satisfaction, Echowell continues to be a trusted name in the industry.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

9 Patents

#440 in Taipei

#1,547 in Taiwan

Taipei, Taiwan

Echowell Electronic Co., Ltd