Location History:
- Los Gatos, CA (US) (1999)
- Monte Sereno, CA (US) (1997 - 2000)
Company Filing History:
3 out of 115 
1 out of 832,912 Years Active: 1997-2000
Title: The Innovative Mind of John Ko-Jen Chen
Introduction
John Ko-Jen Chen, an esteemed inventor based in Monte Sereno, California, is recognized for his significant contributions to the field of magnetic alloys. With a total of four patents to his name, Chen has made substantial advancements in the development of materials that enhance magnetic performance and reliability.
Latest Patents
Chen's latest patents focus on innovative solutions in thin film magnetic alloys. One of his key inventions is a thin film magnetic alloy that incorporates a Co-Pt based structure doped with a relatively high amount of nitrogen. This alloy boasts a high coercivity, reaching 1400 Oe or above, and improves the signal-to-noise ratio (SNR) compared to its nitrogen-free counterparts. The fabrication process involves vacuum deposition techniques such as sputtering, where nitrogen can be introduced either from the sputtering gas or source materials.
Another notable patent details a magnetic alloy designed for improved corrosion resistance while maintaining high magnetic performance. This alloy remains effective in high-density recording applications, showing excellent coercivity and magnetization saturation (Ms). It includes elements such as cobalt, nickel, platinum, tantalum, and titanium, and optimizes the incorporation of additional elements like boron to enhance the overall quality of the alloy.
Career Highlights
John Ko-Jen Chen has garnered considerable experience working with organizations at the forefront of magnetic technology. Notably, he has contributed to research and development at Komag Corporation, where his innovative thinking and technical expertise have led to advancements in magnetic materials.
Collaborations
Throughout his career, Chen has collaborated with esteemed colleagues including Tu Chen and Tsutomu Tom Yamashita. These partnerships have fostered an environment of creativity and innovation, pushing the boundaries of magnetic alloys further.
Conclusion
John Ko-Jen Chen stands out as an influential figure in the world of materials science and engineering, particularly in the development of magnetic alloys. His four patents not only highlight his ingenuity but also showcase his commitment to advancing technology in this vital field. Innovators like Chen play a crucial role in shaping the future of materials and their applications in various industries.