This inventor holds 1 USPTO granted patent. Top assignee: Tongji 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:
Years Active: 2026
Title: Innovations of Xianfeng Li in Membrane Technology
Introduction
Xianfeng Li is a notable inventor based in Shanghai, China. He has made significant contributions to the field of membrane-based water treatment. His innovative work focuses on developing advanced filtration technologies that address critical environmental challenges.
Latest Patents
Xianfeng Li holds a patent for a "Method for preparing a novel guanidine-based composite nanofiltration flat-sheet membrane." This invention pertains to a novel guanidine-based composite nanofiltration (NF) flat-sheet membrane, along with its preparation method and application. The invention describes a method that forms a dense separation layer on the surface of a polyethersulfone ultrafiltration membrane through a polymerization reaction. This reaction occurs between the amino group of 1,3-diaminoguanidine and the acyl chloride group of trimesoyl chloride. The resulting guanidine-based composite NF membrane effectively separates multivalent ions over a wide pH range, achieving a rejection rate of over 96% for a 1000 ppm MgSO solution. This membrane can operate continuously and stably in mixed ion solutions with varying pH levels.
Career Highlights
Xianfeng Li is affiliated with Tongji University, where he continues to advance research in membrane technology. His work has garnered attention for its practical applications in water treatment and environmental sustainability. With a focus on innovative solutions, he has contributed to the development of technologies that enhance water purification processes.
Collaborations
Xianfeng Li has collaborated with notable colleagues, including Qiaoying Wang and Tong Zhang. Their joint efforts have furthered research in the field of membrane technology, leading to advancements that benefit both academia and industry.
Conclusion
Xianfeng Li's contributions to membrane technology exemplify the importance of innovation in addressing environmental challenges. His patented methods and ongoing research at Tongji University highlight his commitment to developing effective water treatment solutions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile