Company Filing History:
1 out of 1 
1 out of 4 Years Active: 2000
Title: Cheong Bon Han: Innovator in Ballast Technology
Introduction
Cheong Bon Han is a notable inventor based in San Jose, CA, who has made significant contributions to the field of ballast technology. With a focus on enhancing the efficiency and functionality of ballasts, he has developed innovative solutions that address various challenges in the industry.
Latest Patents
Cheong Bon Han holds a patent for a "Ballast method and apparatus and coupling therefor." This invention discloses a ballast that can operate effectively at various input voltage levels. It also features a ceramic heat sink for switching transistors, which improves thermal management. Additionally, the ballast utilizes a start signal for a power factor circuit to boost voltage after the load has already received current. Furthermore, the design includes a transformer with permeability that varies inversely with temperature over a specified range.
Career Highlights
Throughout his career, Cheong Bon Han has worked with several companies, including Lumatronix Manufacturing, Inc. and New Anthony, Inc. His experience in these organizations has allowed him to refine his skills and contribute to advancements in ballast technology.
Collaborations
Cheong Bon Han has collaborated with talented individuals such as Doo Eui Yoon and Eun Chul Shin. These partnerships have fostered innovation and have been instrumental in the development of his patented technologies.
Conclusion
Cheong Bon Han's work in ballast technology exemplifies his commitment to innovation and efficiency. His contributions have the potential to impact various applications, making him a significant figure in the field.