Location History:
- Daejoen, KR (2011)
- Daejeon, KR (2009 - 2016)
Company Filing History:
5 out of 195 
2 out of 43 
1 out of 1,332 
Years Active: 2009-2016
Title: **Innovative Contributions of Inventor Han Kwon Chang**
Introduction
Han Kwon Chang is a prominent inventor based in Daejeon, South Korea, known for his significant contributions to the field of science and technology. With a remarkable portfolio of 8 patents, Chang has greatly advanced the processes related to semiconductor manufacturing and materials science.
Latest Patents
One of his latest patents, "Method for separating and recovering silicon from silicon sludge," discloses an innovative approach for selectively separating and recovering silicon from waste silicon sludge generated during semiconductor manufacturing. This method efficiently removes various components, including oil, iron, and silicon carbide, and enables the selective recovery of silicon without the need for additives or additional equipment like magnetic separators.
Another notable patent by Chang is the "Method of preparing mesoporous silica particles using spray pyrolysis." This method outlines a technique to prepare mesoporous silica particles by first creating an aqueous silicic acid solution, then spraying it into droplets, and finally pyrolyzing the droplets in a pre-heated reactor with a carrier gas. This development highlights Chang's focus on enhancing material preparation techniques in the industry.
Career Highlights
Throughout his career, Han Kwon Chang has been associated with leading research institutions, notably the Korea Institute of Geoscience and Mineral Resources (KIGAM). His work at KIGAM has positioned him as a key player in advancing geoscience research and technology.
Collaborations
Chang has also collaborated with notable colleagues, including Hee Dong Jang and Kuk Cho, contributing to various research projects and innovations. These collaborations have not only enriched his own research but also fostered advancements in their shared fields of expertise.
Conclusion
Han Kwon Chang continues to make noteworthy strides in technology and innovation with his patents and research contributions. His methods for recovering valuable materials and preparing advanced particles reflect a commitment to improving industrial processes and environmental sustainability, reinforcing his status as a pivotal figure in innovation.