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For the Inventor, By the Inventor

Gyeongsangnam, South Korea

Yong Ju Ji

This inventor holds 12 USPTO granted patents and 6 published patent applications and 3 EPO patents. Top assignee: Em-Tech Co., Ltd.. Active years: 2020-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yong Ju Ji. Retrieved from https://idiyas.com/inventor/yong-ju-ji

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 12 

% Patents Active = 83.3

 

Average Co-Inventor Count = 2.6

ph-index = 1

Forward Citations = 7(Granted Patents)


Company Filing History:

goldMedal12 out of 58 
 
Em-Tech Co., Ltd.
 patents

Years Active: 2020-2024

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12 patents (USPTO):Explore Patents
1. 12137311 - Earphone with duct unit dividing pressure equilibrium hole and back hole (2024-11-05),
2. 11696059 - Two-way receiver having front bass duct (2023-07-04),
3. 11564026 - Earphone having pressure equilibrium structure (2023-01-24),
4. 11528563 - Hybrid receiver having fixing bracket for drivers (2022-12-13),
5. 11463815 - Yoke assembly for two-way receiver and two-way receiver having the same (2022-10-04),
6. 11395060 - Receiver having pressure equilibrium structure (2022-07-19),
7. 11363370 - Receiver module integrated with duct (2022-06-14),
8. 11336983 - Receiver module having pressure equilibrium structure (2022-05-17),
9. 11212616 - Bonding structure of diaphragm for receiver (2021-12-28),
10. 10899577 - Automatic winding device (2021-01-26),
11. 10667028 - Electric device including microspeaker module with vibration function and wearable acoustic transducer (2020-05-26),
12. 10536771 - Dynamic receiver with resonance protector for earphone (2020-01-14),

Title: Innovations by Yong Ju Ji

Introduction

Yong Ju Ji is a prominent inventor based in Gyeongsangnam-do, South Korea. He has made significant contributions to the field of audio technology, holding a total of 12 patents. His innovative designs focus on enhancing sound quality and user experience in earphones and speakers.

Latest Patents

One of his latest patents is an earphone with a duct unit that divides a pressure equilibrium hole and a back hole. This design includes a driver unit with a frame, magnetic circuit, voice coil, and diaphragm, which work together to reproduce sound effectively. The pressure equilibrium hole improves the pressure difference between the front and rear sides of the driver unit, while the back hole smooths the vibration of the diaphragm. Another notable patent is for a two-way receiver featuring a front bass duct. This receiver includes a cylindrical frame and a yoke that divides the internal space, allowing for enhanced sound emission from the speaker units.

Career Highlights

Yong Ju Ji is currently employed at Em-tech Co., Ltd., where he continues to innovate in audio technology. His work has significantly impacted the design and functionality of audio devices, making them more efficient and user-friendly.

Collaborations

Yong Ju Ji collaborates with talented individuals such as Jun Hee Han and Jung Ho Kang, contributing to a dynamic and innovative work environment.

Conclusion

Yong Ju Ji's contributions to audio technology through his patents demonstrate his commitment to innovation and excellence in the field. His work continues to influence the design of modern audio devices, enhancing the listening experience for users worldwide.

Profile summary based on public USPTO records.
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]
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