Location History:
- Mayfield Heights, OH (US) (2011 - 2012)
- San Jose, CA (US) (2016 - 2018)
- Cupertino, CA (US) (2019)
Company Filing History:
4 out of 581 
2 out of 285 
Years Active: 2011-2019
Title: The Innovative Mind of Guangjun Xu
Introduction
Guangjun Xu, based in San Jose, California, is a notable inventor recognized for his extensive contributions to the field of high purity silica materials. With a portfolio of five patents, his work is pivotal in enhancing packaging solutions for pharmaceutical applications.
Latest Patents
Two of Guangjun Xu’s latest patents exemplify his innovation in the realm of fused quartz tubing. The first patent, titled "Fused quartz tubing for pharmaceutical packaging and methods for making the same," outlines a method for forming high purity silica articles that are particularly suitable for pharmaceutical packaging. This method involves several steps, including forming a fused quartz melt from SiO raw material, creating a quartz tube, and treating the tube with an acid composition, followed by heat treatment. This process significantly enhances the purity of silica glass articles, making them ideal for pharmaceutical applications.
The second patent details a high silica glass composition specifically designed for pharmaceutical packages, comprising about 92 to 99.9999 wt. % SiO, with the inclusion of dopants to improve the material's properties. Such glass compositions possess a working temperature range of 600 to 2,000°C, while maintaining stability similar to pure fused quartz, thus enabling cost-effective fabrication of pharmaceutical containers.
Career Highlights
Guangjun Xu has built an impressive career, having worked with renowned organizations such as Momentive Performance Materials and Draka Comteq. His experience within these companies has paved the way for innovative developments in silica material applications, particularly for the pharmaceutical sector.
Collaborations
Throughout his professional journey, Guangjun Xu has collaborated with esteemed colleagues, including Kipyung Ahn and Martin Panchula. These collaborations have contributed to the advancement of high purity silica technologies, fostering innovation within the industry.
Conclusion
Guangjun Xu stands out as an influential inventor whose contributions significantly impact the pharmaceutical packaging landscape. Through his innovative patents and collaborative efforts, he continues to enhance the quality and efficiency of silica materials, ensuring that they meet the rigorous demands of pharmaceutical applications. His work not only reflects his expertise but also represents a commitment to innovation and excellence in the field.