John P Witham

Title: Innovations of John P Witham

Introduction

John P Witham is an accomplished inventor based in Fountain Valley, California. He has made significant contributions to the field of materials science, particularly in the development of advanced ceramics. With a focus on low-temperature firing techniques, his work has implications for various applications in electronics and engineering.

Latest Patents

John P Witham holds a patent for a solution-coated hydrothermal BaTiO3, which is designed for low-temperature firing. This innovative approach involves coating hydrothermal BaTiO3 crystallites with Bismuth solutions derived from Bismuth metal-organics and anhydrous solvents. The patent highlights the use of Bi 2-ethylhexanoate and Bi-neodecanoate as key components. The resulting BaTiO3 ceramics, when sintered at temperatures between 700°C and 1000°C, demonstrate impressive densification and dielectric properties.

Career Highlights

Throughout his career, John has focused on enhancing the performance of BaTiO3 ceramics. His research indicates that ceramics coated with Bi-neodecanoate can achieve over 90% theoretical density at temperatures as low as 800°C. Additionally, the average grain sizes of 0.2-0.4 µm observed in Bi-coated BaTiO3 ceramics contribute to their superior dielectric characteristics, particularly in lower temperature ranges.

Collaborations

John P Witham has collaborated with notable colleagues in his field, including Clive A Randall and Umesh Kumar. Their joint efforts have further advanced the understanding and application of Bismuth-coated ceramics.

Conclusion

John P Witham's innovative work in the field of materials science, particularly with BaTiO3 ceramics, showcases his dedication to advancing technology through low-temperature firing techniques. His contributions are significant in enhancing the performance of electronic materials.