Company Filing History:
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1 out of 1,185 
Years Active: 2006-2012
Title: Han Juanta: Innovator in Electropolishing and Stent Technology
Introduction
Han Juanta is a notable inventor based in Milpitas, CA (US), recognized for his contributions to the fields of electropolishing and intravascular stent technology. With a total of 2 patents, his work has significantly impacted medical device manufacturing and surface treatment processes.
Latest Patents
One of Han Juanta's latest patents is an automated electropolishing process. This innovative electropolishing system includes an anode, a cathode, a rolling block, and a motion controller. The anode is designed to removably retain a metal device to be electropolished and can be formed as a bar made from a solid cylindrical piece of metal or other configurations, such as wires with hooks. The anode transfers electricity to the metal device while grooming its surface as it contacts the rolling block. The cathode, configured as a mesh, completes the electrical circuit. The rolling block is made from a relatively smooth, solid material and is positioned to allow the metal device to roll against its surface. The motion controller provides vertical and horizontal movement of the anode and metal device, utilizing force transducers to control the compression of the metal device against the rolling block.
Another significant patent is the covered stent assembly for reduced shortening during stent expansion. This invention utilizes a polymeric material such as polyurethane, PET, or ePTFE to cover an intravascular stent. The cover material features an overlapping portion that is slidable upon itself, ensuring that when the stent is expanded, the cover material does not contribute to stent foreshortening. Additionally, the cover material can be perforated to allow for endothelialization and can be drug-loaded to facilitate the repair of damaged vessels.
Career Highlights
Throughout his career, Han Juanta has worked with prominent companies in the medical device industry, including Advanced Cardiovascular Systems, Inc. and Abbott Cardiovascular Systems, Inc. His expertise in electropolishing and stent technology has made him a valuable asset in these organizations.
Collaborations
Han has collaborated with talented individuals such as Kenny L. Dang and Nazanine Matin, contributing to the advancement of medical technologies through teamwork and shared expertise.
Conclusion
Han Juanta's innovative patents and career in the medical device industry highlight his significant