This inventor holds 2 USPTO granted patents and 1 published patent application and 1 EPO patent. Top assignee: Commissariat a L'energie Atomique Et Aux Energies Alternatives. Active years: 2018-2019.
Company Filing History:
Years Active: 2018-2019
Title: Johann Testard: Innovator in Silicon Solidification Technologies
Introduction
Johann Testard is a notable inventor based in Veyrier du Lac, France. He has made significant contributions to the field of materials science, particularly in the development of substrates for silicon solidification. With a total of 2 patents to his name, Testard's work is paving the way for advancements in silicon processing technologies.
Latest Patents
Testard's latest patents include innovative solutions for substrates used in the solidification of silicon. The first patent describes a substrate with a low-permeability coating designed to enhance the solidification process. This substrate is characterized by a surface coating that includes a barrier layer made of silica and materials such as silicon carbide (SiC), silicon (Si), and silicon nitride (SiN). The composition of this barrier layer varies, with the amount of material X ranging from 25 wt.-% to 50 wt.-% relative to the total weight of the layer. The barrier layer is formed by grains of materials X that are partially covered by a silica shell, ensuring direct contact with the substrate.
The second patent focuses on a substrate specifically intended for contact with liquid silicon. This substrate features a multilayer coating that includes an adhesion layer with at least 30% open porosity, made from a mixture of silica and silicon nitride. The silica content in this layer ranges from 10 wt.-% to 55 wt.-%. Additionally, a release layer is applied on top of the adhesion layer, which consists of silica and silicon nitride with a silica content between 2 wt.-% and 10 wt.-%.
Career Highlights
Johann Testard is currently associated with the Commissariat à l'Énergie Atomique et aux Énergies Alternatives, a prominent research institution in France. His work at this institution has allowed him to focus on innovative materials and processes that enhance the efficiency of silicon solidification.
Collaborations
Testard has collaborated with esteemed colleagues such as Jean-Paul Garandet and Denis Camel. Their combined expertise has contributed to the advancement of technologies in the field of silicon processing.
Conclusion
Johann Testard's contributions to the field of silicon solidification are significant and impactful. His innovative patents reflect a deep understanding of materials science and a commitment to advancing technology in this area. Through his work, Test