Seoul, South Korea

Doo Won Han

This inventor holds 4 USPTO granted patents and 5 published patent applications and 1 EPO patent. Top assignee: Coway Co., Ltd.. Active years: 2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Doo Won Han. Retrieved from https://idiyas.com/inventor/doo-won-han-3z0rpehu

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

USPTO Granted Patents = 4 

% Patents Active = 50.0

 

Average Co-Inventor Count = 6.1

ph-index = 1


Company Filing History:


Years Active: 2026

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4 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Doo Won Han

Introduction

Doo Won Han is a notable inventor based in Seoul, South Korea. He has made significant contributions to the field of water purification technology. With a total of 4 patents to his name, his work focuses on enhancing the efficiency and functionality of water purifiers.

Latest Patents

One of his latest inventions is a water purifier that includes a reverse osmosis (RO) filter. This innovative device features a non-filtration part, a filtration part, and a reverse osmosis membrane designed to filter raw water into purified water. The system also incorporates storage for both purified and raw water, a flow channel for water movement, and valve modules that can be selectively opened or closed to manage water flow. Additionally, it includes a sterilization module that ensures the raw water is sterilized before purification. In a unique flushing mode, the controller manages the flow of purified water to clean the reverse osmosis membrane, ensuring optimal performance.

Another significant patent is for a water purifier equipped with a composite filter. This design allows for the implementation of additional functions using an external treatment member. The water purifier can receive raw water, discharge second purified water, and even handle externally treated water, providing a versatile solution for residential water needs.

Career Highlights

Doo Won Han has worked with prominent companies in the water purification industry, including Coway Co., Ltd. and Woongjin Coway Co., Ltd. His experience in these organizations has contributed to his expertise and innovative approach to water purification technologies.

Collaborations

Throughout his career, Doo Won Han has collaborated with talented individuals such as Chan Jung Park and Ju Hyuk Eom. These partnerships have fostered a creative environment that has led to the development of groundbreaking inventions.

Conclusion

Doo Won Han's contributions to water purification technology demonstrate his commitment to innovation and improvement in this essential field. His patents reflect a deep understanding of the challenges in water treatment and a dedication to providing effective solutions.

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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