This inventor holds 1 USPTO granted patent. Top assignees: China Academy of Railway Sciences Corporation Limited, Railway Engineering Research Institute, China Academy of Railway Sciences Corporation Limited. 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:
1 out of 10 
1 out of 1 Years Active: 2026
Title: Zefu Zheng - Innovator in Tunnel Insulation Technology
Introduction
Zefu Zheng is a notable inventor based in Beijing, China. He has made significant contributions to the field of construction materials, particularly in the development of insulation technologies for tunnels in cold regions. His innovative approach has led to the creation of a unique spray-applied polyurethane insulation material.
Latest Patents
Zheng holds a patent for a spray-applied polyurethane insulation material specifically designed for tunnels in cold regions. This invention provides a comprehensive solution for insulation and flame retardation in challenging environments. The material is composed of a precise mass ratio of components, including polyether polyol, polyester polyol, chain extenders, catalysts, flame retardants, water, and surfactants. The B component consists of diphenylmethane diisocyanate. This formulation ensures effective insulation and flame retardant properties, making it ideal for tunnel construction in cold climates.
Career Highlights
Zefu Zheng has worked with the China Academy of Railway Sciences Corporation Limited and the Railway Engineering Research Institute. His experience in these organizations has allowed him to apply his innovative ideas in practical settings, contributing to advancements in railway engineering and construction.
Collaborations
Zheng has collaborated with notable colleagues, including Xiaoxiong Guo and Peng Zhao. Their combined expertise has further enhanced the development and application of insulation technologies in the railway sector.
Conclusion
Zefu Zheng's contributions to tunnel insulation technology demonstrate his commitment to innovation and practical solutions in construction. His patent for spray-applied polyurethane insulation material is a testament to his expertise and dedication to improving infrastructure in cold regions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile