This inventor holds 2 USPTO granted patents. Top assignees: Tyco Fire & Security Gmbh, York Guangzhou Air Conditioning and Refrigeration Co., Ltd.. Active years: 2026.
Company Filing History:
2 out of 149 
2 out of 3 Years Active: 2026
Title: The Innovative Contributions of Baojun Chang
Introduction
Baojun Chang is a notable inventor based in Qingyuan, China. He has made significant contributions to the field of engineering, particularly in the design of air flow systems. His innovative approach has led to the development of a unique patent that addresses noise reduction in axial flow fans.
Latest Patents
One of Baojun Chang's key patents is titled "Air guide ring and axial flow fan comprising same." This invention features an air guide ring that includes an annular air guide portion with an air duct designed to accommodate an impeller of an axial flow fan. The design incorporates an inner side wall and an outer side wall, with the air duct enclosed by the inner side wall. Notably, a plurality of noise reduction devices is arranged on the inner side wall in a circumferential direction, effectively reducing noise within the air duct. This innovative design enhances the performance and user experience of axial flow fans.
Career Highlights
Throughout his career, Baojun Chang has worked with prominent companies in the air conditioning and security sectors. He has been associated with York Guangzhou Air Conditioning and Refrigeration Co., Ltd. and Tyco Fire & Security GmbH. His experience in these organizations has allowed him to apply his inventive skills in practical settings, contributing to advancements in technology.
Collaborations
Baojun Chang has collaborated with several talented individuals in his field. Notable coworkers include Qinghua Tang and Xiaokui Ma, who have worked alongside him on various projects. Their combined expertise has fostered a collaborative environment that encourages innovation and creativity.
Conclusion
In summary, Baojun Chang is a distinguished inventor whose work has significantly impacted the engineering landscape. His patent for an air guide ring and axial flow fan exemplifies his commitment to innovation and problem-solving. Through his career and collaborations, he continues to inspire advancements in technology.