This inventor holds 2 USPTO granted patents. Top assignees: Chongqing University, Shandong Jiaotong University, Shandong University. Active years: 2026.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
2 out of 146 
2 out of 12 
2 out of 366 
Years Active: 2026
Title: Yefeng Du: Innovator in Roadway Paving Technology
Introduction
Yefeng Du is a notable inventor based in Jinan, China. He has made significant contributions to the field of roadway construction through his innovative methods. His work focuses on improving the durability and efficiency of subgrade materials used in paving.
Latest Patents
Yefeng Du holds a patent for a method of paving a roadway using hydrogel modified subgrade. This patent, titled "Method of paving a roadway using hydrogel modified subgrade," outlines an adjustment method of moisture content and dense state for a hydrogel improved subgrade based on weather-resistance during an in-service period. The method includes several steps: first, carrying out surface cleaning and compaction of the ground; second, preparing hydrogel improved subgrade raw material; third, paving the prepared material on the surface to form the first-layer improved subgrade; and finally, paving plain soil subgrade onto the first-layer. This innovative approach combines the water absorption and release function of the modified resin with the gel state characteristics, allowing for layered paving that can absorb water and expand slightly when moisture levels increase. Additionally, it forms a protective layer at the connection sections to prevent the pot-cover effect from occurring.
Career Highlights
Yefeng Du has worked at prominent institutions such as Shandong Jiaotong University and Shandong University. His experience in these academic environments has allowed him to develop and refine his innovative techniques in roadway construction.
Collaborations
Yefeng Du has collaborated with notable colleagues, including Xinzhuang Cui and Jin Li. Their combined expertise has contributed to advancements in the field of civil engineering and roadway technology.
Conclusion
Yefeng Du's innovative methods in roadway paving demonstrate his commitment to enhancing construction techniques. His patent reflects a significant advancement in the use of hydrogel materials, showcasing the potential for improved infrastructure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile