John A DeRosa

Title: Innovations by John A DeRosa

Introduction

John A DeRosa is a notable inventor based in Queens Village, NY (US). He has made significant contributions to the field of materials science, particularly in the development of advanced metal powders. With a total of three patents to his name, DeRosa's work has implications in various high-tech applications.

Latest Patents

DeRosa's latest patents focus on oxidation and sinter-resistant metal powders. One of his innovations involves a high-density precious metal powder that resists sintering at 600 degrees Celsius. This powder contains a very small percentage of titania or zirconia and is produced through co-nucleation and precipitation of gold and titania from an ammoniacal solution at pH 3-4 with a bisulfite. Additionally, he has developed a nickel powder that includes a small percentage of a refractory oxide such as zirconia, prepared by co-nucleation and precipitation from an alkaline solution with hydrazine. The materials produced exhibit oxidation resistance and superior sintering temperatures compared to pure metals, making them useful in microelectronics as air-fired thick films. Furthermore, the nickel powders have applications as hydrogenation catalysts and in other areas.

Career Highlights

John A DeRosa is currently associated with Plessey Incorporated, where he continues to innovate and develop new materials. His work has garnered attention for its potential to enhance the performance of electronic components and other industrial applications.

Collaborations

DeRosa collaborates with Anthony V Fraioli, contributing to the advancement of their shared projects and innovations.

Conclusion

John A DeRosa's contributions to the field of materials science through his innovative patents highlight his role as a significant inventor. His work continues to influence various industries, particularly in microelectronics and catalysis.