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For the Inventor, By the Inventor

Seoul, South Korea

Hong-Jun Ahn

This inventor holds 2 USPTO granted patents and 14 published patent applications. Top assignee: Dongwoo Fine-Chem Co., Ltd.. Active years: 2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hong-Jun Ahn. Retrieved from https://idiyas.com/inventor/hong-jun-ahn-bhx3q2bq

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

USPTO Granted Patents = 2 

% Patents Active = 100.0

Average Co-Inventor Count = 4.4

ph-index = 1


Company Filing History:

goldMedal2 out of 382 
 
Dongwoo Fine-Chem Co., Ltd.
 patents

Years Active: 2025

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2 patents (USPTO):Explore Patents
1. 12443071 - Optical stack and manufacturing method therefor, and smart window comprising same and vehicle or building window to which same is applied (2025-10-14),
2. 12282221 - Optical laminate, method for manufacturing same, smart window comprising same, and vehicle and building window or door employing same (2025-04-21),

Title: Innovations of Hong-Jun Ahn in Optical Technology

Introduction

Hong-Jun Ahn is a prominent inventor based in Seoul, South Korea. He has made significant contributions to the field of optical technology, particularly in the development of smart windows and optical stacks. With a total of two patents to his name, Ahn's work showcases his innovative approach to enhancing light transmittance in various applications.

Latest Patents

Ahn's latest patents include an "Optical stack and manufacturing method therefor" and a "smart window comprising same and vehicle or building window to which same is applied." The first patent relates to a transmittance variable optical stack that includes polarizing plates stacked on both surfaces with a liquid crystal layer interposed between them. This optical stack is designed to change its total light transmittance based on the application of voltage. The second patent focuses on a transmittance-variable optical laminate, which consists of multiple layers including polarizing plates and a liquid crystal layer, aimed at improving the functionality of smart windows in vehicles and buildings.

Career Highlights

Hong-Jun Ahn is currently employed at Dongwoo Fine-chem Co., Ltd., where he continues to push the boundaries of optical technology. His work has garnered attention for its potential applications in energy efficiency and smart building technologies. Ahn's innovative designs are paving the way for advancements in how we interact with light and energy in our environments.

Collaborations

Ahn has collaborated with notable colleagues such as Pyoung-Yun Oh and Sung-Su Kim. Their combined expertise has contributed to the successful development of Ahn's patented technologies.

Conclusion

Hong-Jun Ahn's contributions to optical technology through his patents reflect his commitment to innovation and advancement in the field. His work not only enhances the functionality of smart windows but also sets a foundation for future developments in energy-efficient technologies.

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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