This inventor holds 6 USPTO granted patents and 1 published patent application and 4 EPO patents. Top assignee: California Institute of Technology. Active years: 2015-2020.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2015-2020
Title: Innovations of Han-Chieh Chang
Introduction
Han-Chieh Chang is a prominent inventor based in Pasadena, California. He has made significant contributions to the field of electroplating and retinal prosthesis devices. With a total of six patents to his name, Chang's work showcases his innovative approach to solving complex engineering challenges.
Latest Patents
One of Han-Chieh Chang's latest patents is a micro-fabricated group electroplating technique. This invention describes methods and devices for electroplating a multitude of micro-scale electrodes that are electrically isolated from each other on a cable or other device. The process involves shorting together a localized area of connections on one end of the cable by depositing a metal sheet or other conductive material. This metal sheet is connected to a terminal of a power supply, while the electrode end of the cable is immersed in an electrolyte solution for electrodeposition. After the electrodes are electroplated, the metal sheet is removed to re-isolate the electrodes.
Another notable patent is related to an implant device. This invention provides chip packaging and processes for the assembly of retinal prosthesis devices. It utilizes photo-patternable adhesive or epoxy, such as photoresist, to attach a chip to a targeted thin-film substrate. This innovative approach helps prevent delamination, ensuring the reliability of the device.
Career Highlights
Han-Chieh Chang is affiliated with the California Institute of Technology, where he continues to advance his research and development efforts. His work has garnered attention for its practical applications in both medical and technological fields.
Collaborations
Chang has collaborated with notable colleagues, including Yu-Chong Tai and Xiaoxiao Zhang. Their combined expertise contributes to the innovative projects they undertake together.
Conclusion
Han-Chieh Chang's contributions to the fields of electroplating and retinal prosthesis devices highlight his role as a leading inventor. His innovative patents reflect a commitment to advancing technology and improving lives through engineering solutions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile