Company Filing History:
2 out of 15 
1 out of 131,906 
Years Active: 2014-2023
Title: Jianglong Chang: Innovator in Railway Technology
Introduction
Jianglong Chang is a prominent inventor based in Nanjing, China. He has made significant contributions to the field of railway technology, holding a total of 3 patents. His innovative designs focus on enhancing the efficiency and safety of railway vehicles.
Latest Patents
One of Jianglong Chang's latest patents is the "Bus breaker control circuit for railway vehicle." This invention includes a close relay, an open relay, a power supply circuit for a bus breaker, a power supply circuit for the hold relay, and a delay module. The design ensures that the power supply circuit for the hold relay is connected in series to a train power supply, enhancing the reliability of the bus breaker control system.
Another notable patent is the "Pantograph remote control circuit for unmanned metro train." This circuit features a startup circuit of an auxiliary inverter emergency start relay and a control circuit of an auxiliary inverter energized relay. The innovation allows for remote control of the pantograph raising process, which saves time for the driver and reduces the potential for misoperation.
Career Highlights
Jianglong Chang has worked with several reputable companies, including CRRC Nanjing Puzhen Co., Ltd. and Samsung Electronics Co., Ltd. His experience in these organizations has contributed to his expertise in railway technology and innovation.
Collaborations
Throughout his career, Jianglong has collaborated with talented individuals such as Li Yang and Lian Ge. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies in the railway sector.
Conclusion
Jianglong Chang is a distinguished inventor whose work in railway technology has made a significant impact. His patents reflect his commitment to innovation and safety in transportation.