Company Filing History:
6 out of 54 
4 out of 19,775 
Years Active: 2009-2011
Title: The Innovations of Han-Chieh Chang
Introduction
Han-Chieh Chang is a notable inventor based in Taipei Hsien, Taiwan. He has made significant contributions to the field of technology, holding a total of seven patents. His work primarily focuses on systems and methods that enhance the functionality and efficiency of various devices.
Latest Patents
One of Han-Chieh Chang's latest patents is a testing system and method for motors. This innovative system is designed to test the temperature characteristics of a first motor using a second motor, a controller, a driver, a load, a temperature sensor, and a temperature recorder. The controller issues drive commands to the driver, which in turn drives the second motor. The first motor's current is determined by adjusting the load's resistance. The temperature sensor monitors the first motor's temperature at set intervals and sends this data to the temperature recorder. The recorder logs and transmits the temperature data to the controller for analysis. Another significant patent is a patch panel that features a printed circuit board with multiple input and output terminals. The number of input terminals matches the output terminals, and each input terminal is connected to standby terminals via switches. This design allows for the selective replacement of inoperable terminals, ensuring continued functionality.
Career Highlights
Throughout his career, Han-Chieh Chang has worked with prominent companies such as Foxnum Technology Co., Ltd. and Hon Hai Precision Industry Co., Ltd. His experience in these organizations has contributed to his expertise in developing innovative technologies.
Collaborations
Han-Chieh Chang has collaborated with talented individuals in the field, including Hsing-Chang Liu and Hsuan-Hung Hsu. These partnerships have fostered a creative environment that has led to the development of groundbreaking inventions.
Conclusion
Han-Chieh Chang's contributions to technology through his patents and collaborations highlight his role as an influential inventor. His innovative systems and methods continue to impact the industry positively.