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For the Inventor, By the Inventor

Seoul, South Korea

Woo-Jin Joo

This inventor holds 5 USPTO granted patents and 2 EPO patents. Top assignee: Coway Co., Ltd. Active years: 2019-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Woo-Jin Joo. Retrieved from https://idiyas.com/inventor/woo-jin-joo

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

USPTO Granted Patents = 5

% Patents Active = 100.0

 

Average Co-Inventor Count = 7.5

ph-index = 1

Forward Citations = 2(Granted Patents)


Company Filing History:

goldMedal5 out of 214 
 
Coway Co., Ltd
 patents

Years Active: 2019-2025

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5 patents (USPTO):Explore Patents
1. 12280334 - Water purifier (2025-04-21),
2. 12157661 - Water purifier with ice-maker (2024-12-03),
3. 10905986 - Water treatment apparatus (2021-02-02),
4. 10507954 - Water storage tank bladder, manufacturing method therefor, water storage tank including bladder, and water treatment apparatus including water storage tank (2019-12-17),
5. 10457538 - Water discharge device (2019-10-29),

Title: Woo-Jin Joo: Innovator in Water Purification Technology

Introduction

Woo-Jin Joo is a prominent inventor based in Seoul, South Korea. He has made significant contributions to the field of water purification, holding a total of 5 patents. His innovative designs focus on enhancing the efficiency and functionality of water purification systems.

Latest Patents

Among his latest inventions is a water purifier that features a reverse osmosis membrane filter. This device includes a supply valve, an instantaneous heating device, and a control unit that manages the flow channels for hot and domestic water. The design ensures that hot water is prioritized during the draining process. Another notable invention is an ice-making water purifier, which integrates a water tank unit, an ice-maker, and a flow rate sensor. This system allows for the precise control of purified water supply to the ice-maker, ensuring optimal performance.

Career Highlights

Woo-Jin Joo is currently employed at Coway Co., Ltd., a leading company in the water purification industry. His work has significantly advanced the technology used in modern water purification systems, making them more efficient and user-friendly.

Collaborations

He has collaborated with notable coworkers, including Jung-Hwan Lee and Jong-Hwan Lee, contributing to various innovative projects within the company.

Conclusion

Woo-Jin Joo's contributions to water purification technology exemplify his commitment to innovation and excellence. His patents reflect a deep understanding of user needs and technological advancements in the field.

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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