John T Plewes

Title: Innovations by John T Plewes: A Pioneer in Superconductive Materials

Introduction

John T Plewes, an accomplished inventor based in Berkeley Heights, NJ, has made significant contributions to the field of superconductive materials, with a total of 19 patents to his name. His work has demonstrated an impressive blend of innovative techniques aimed at improving the functionality and safety of industrial materials.

Latest Patents

Among his latest patents, Plewes developed a method for forming superconductive articles using hydrostatic extrusion. This innovative method allows for the creation of elongated articles that include metallic oxide superconductor material, achieved at temperatures below 800°C, and even as low as 450°C. The process involves utilizing superconductive core material that is free from carbon or organic additives and has a density of at least 55% of full density. Before extrusion, this densified material is enclosed in a metal container, which serves as a cladding, preferably made from dispersion hardened metal or metal alloys.

Another of his notable innovations includes the creation of machinable, lead-free wrought copper-containing alloys. With increasing awareness of health and environmental impacts from lead, Plewes’ invention emphasizes the use of bismuth and modifying elements like phosphorous, indium, or tin. This development preserves the machinability and workability of alloys while steering clear of the drawbacks associated with lead, allowing for a broad range of applications using lead-free materials.

Career Highlights

John T Plewes has built a distinguished career, notably working at prestigious organizations such as Bell Telephone Laboratories and AT&T Bell Laboratories. His time at these institutions allowed him to engage in groundbreaking research and development, contributing to advancements in materials science and engineering.

Collaborations

Throughout his career, Plewes has collaborated with notable coworkers, including Murray Robbins and Gilbert Y Chin. These partnerships have fostered a collaborative atmosphere, enabling the exchange of ideas and promoting innovative solutions in their respective fields.

Conclusion

John T Plewes stands out as a prominent figure in the innovation landscape of superconductive materials. His inventive methods and dedication to creating safer and more efficient materials are evident in his numerous patents. With continued contributions to the field, Plewes exemplifies the spirit of innovation that drives progress in technology and industrial applications.