This inventor holds 1 USPTO granted patent and 1 published patent application and 2 EPO patents. Top assignees: Chongqing University, Optosky (Xiamen) Optical Ltd., Shandong Taikai Transformer Co., Ltd.. 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 147 
1 out of 1 
1 out of 1 Years Active: 2026
Title: Innovations by Hongfei Liu in Electrical Devices
Introduction
Hongfei Liu is an inventor based in Xiamen, China. He has made significant contributions to the field of electrical devices, particularly in the area of gas detection in insulating oil. His innovative approach aims to enhance the efficiency and accuracy of detecting dissolved gases and partial discharges.
Latest Patent Applications
Hongfei Liu's notable patent application is titled "SIMULTANEOUS DETECTION METHOD AND SYSTEM FOR DISSOLVED GAS AND PARTIAL DISCHARGE IN INSULATING OIL." This application describes a method that involves freely diffusing dissolved gas in insulating oil to an F-P optical fiber interference cavity through an oil-gas separation membrane. The process includes coupling pump light and probe light into the cavity via a frequency division multiplexer. The optoacoustic effect of the dissolved gas, stimulated by the pump light, causes the oil-gas separation membrane to vibrate. The probe light detects this vibration, which alters the cavity length, generating an interference signal.
Conclusion
Hongfei Liu's work represents a significant advancement in the detection of gases in insulating oil, showcasing his innovative spirit and dedication to improving electrical device technology. His contributions are expected to have a lasting impact on the industry.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile