% Expired Patents = 25.0

Forward Citations = 143

Loading Chart...

11 inventors (with patents filed for the assignee):

Yeongha Choi (5 out of 7 patents)

Min Soo Kim (3 out of 3 patents)

Duck Soo Lee (2 out of 3 patents)

4. Sungil Kim (1 out of 5 patents)

5. Duckhwan Kim (1 out of 1 patent)

6. Jae-Hee Won (1 out of 1 patent)

7. Minsoo Kim (1 out of 1 patent)

8. Seokil Jeong (1 out of 1 patent)

9. Soo Myung Kim (1 out of 1 patent)

10. Hyung Sup Yoon (1 out of 1 patent)

11. Jin Ho Oh (1 out of 1 patent)

8 patents: Sort by Forward Citations

1. 9414163 - Amplifier capable of controlling cut-off frequency in real time and amplification method for controlling cut-off frequency in real time (2016-08-09),

2. 9288579 - Method for dynamically adjusting gain of parametric equalizer according to input signal, dynamic parametric equalizer and dynamic parametric equalizer system employing the same (2016-03-15),

3. 8965009 - Speaker with built-in filter for digital amplifier (2015-02-24),

4. 8600076 - Multiband DRC system and method for controlling the same (2013-12-03),

5. 8452025 - Power supply circuit including voltage regulator and headphone driving circuit employing the same (2013-05-28),

6. 8315416 - Necklace type detachable three dimensional sound reproduction apparatus (2012-11-20),

7. 8283976 - Switching device of digital amplifier and method for driving the same (2012-10-09),

8. 8275159 - Media playback apparatus having speakers with rotatable connecting means (2012-09-25),

Company Overview

Neofidelity, Inc. is a leading audio technology company specializing in high-quality audio products. With a focus on innovation and superior sound performance, Neofidelity offers a range of headphones, amplifiers, and other audio accessories for audiophiles and music enthusiasts worldwide. Their products are designed to provide an immersive and authentic listening experience, combining cutting-edge technology with premium materials and craftsmanship.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

8 Patents

#481 in Seoul

#1,306 in South Korea

Seoul, South Korea

Neofidelity, Inc.

Forward Citations = 143

11 inventors:

Yeongha Choi (5 out of 7 patents)

Min Soo Kim (3 out of 3 patents)

Duck Soo Lee (2 out of 3 patents)

4. Sungil Kim (1 out of 5 patents)

5. Duckhwan Kim (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Neofidelity, Inc.. Retrieved from https://idiyas.com/company/neofidelity

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]