Gery R Stafford

Title: Gery R Stafford: Innovator in Silver Powder Precipitation

Introduction

Gery R Stafford is a notable inventor based in Gaithersburg, MD (US). He has made significant contributions to the field of chemical engineering, particularly in the method of producing metallic silver powder. His innovative approach has implications for various industrial applications.

Latest Patents

Gery R Stafford holds a patent for a method for the chemical precipitation of metallic silver powder. This method employs a two-solution technique where a solution of a tin salt and a solution of a silver salt are mixed in the presence of an inorganic or organic acid, alumina, an anionic surfactant, and a colloid. The process results in a precipitation solution that effectively produces silver powder with a favorable size distribution. Almost 80% by weight of the precipitated powder agglomerate is less than 25 µm in diameter, with individual powder particles ranging from 0.2 to 2.0 µm. The silver particles precipitated in the presence of a gelatin colloid require minimal sieving, which reduces work hardening. The powder can be annealed at temperatures up to 750°C for two hours in air with minimal sintering. The resulting silver compacts demonstrate superior mechanical properties compared to conventional silver amalgam.

Career Highlights

Gery R Stafford is associated with the Government of the United States of America, as represented by the Secretary of Commerce. His work has been instrumental in advancing the techniques used in the production of metallic silver powder, showcasing his expertise in the field.

Collaborations

Gery R Stafford has collaborated with Christian E Johnson, contributing to the development and refinement of his innovative methods.

Conclusion

Gery R Stafford's contributions to the field of chemical precipitation of metallic silver powder highlight his role as an influential inventor. His patented method not only enhances the production process but also improves the quality of the resulting silver products.