Company Filing History:
Years Active: 2003-2005
Title: David Charles Pender: Innovator in Fused Quartz and Gallium Nitride Technologies
Introduction
David Charles Pender is a notable inventor based in Schenectady, NY (US). He has made significant contributions to the fields of materials science and engineering, particularly through his innovative patents. With a total of 3 patents, Pender has focused on enhancing the properties of fused quartz and polycrystalline gallium nitride.
Latest Patents
One of Pender's latest patents is for a "Fused quartz article having controlled devitrification." This invention involves a fused quartz article, such as a muffle tube or crucible, designed to have enhanced creep resistance. The improvement is achieved through controlled devitrification, which is accomplished by coating the article with a colloidal silica slurry doped with metal cations like barium, strontium, and calcium. These metal cations promote the nucleation and growth of cristobalite crystals within the fused quartz at elevated temperatures, resulting in significantly higher viscosity and greater creep resistance.
Another significant patent is for "Sintered polycrystalline gallium nitride and its production." This invention describes polycrystalline gallium nitride (GaN) characterized by a specific atomic fraction of gallium and a defined apparent density. The production methods include hot isostatic pressing and high pressure/high temperature sintering, both of which are critical for achieving the desired material properties.
Career Highlights
Throughout his career, David Pender has worked with prominent companies such as General Electric Company and Momentive Performance Materials GmbH. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in material technologies.
Collaborations
Pender has collaborated with notable colleagues, including Mark Philip D'Evelyn and Suresh Shankarappa Vagarali. These partnerships have likely enriched his work and led to further innovations in his field.
Conclusion
David Charles Pender is a distinguished inventor whose work in fused quartz and gallium nitride technologies has made a significant impact. His innovative patents reflect his commitment to advancing material science and engineering.