Company Filing History:
Years Active: 1990-1991
Title: Innovations by John J DuPlessis in Permanent Magnet Technology
Introduction
John J DuPlessis is a prominent inventor based in Elizabethtown, Kentucky, known for his significant contributions to the field of permanent magnet technology. With a total of two patents to his name, he has developed innovative methods that enhance the production and efficiency of permanent magnet articles, which play a crucial role in various industrial applications.
Latest Patents
DuPlessis's innovative spirit is evident in his latest patents, which include:
1. **Method and assembly for producing extruded permanent magnet articles**: This patent describes a sophisticated method for creating a compacted, fully dense permanent magnet. The process involves using a particle charge of a designated permanent magnet alloy, which is placed in a cylindrical container surrounding a core. By heating the container and the charge to an elevated temperature, the material is extruded and compacted to form a high-density permanent magnet article.
2. **Method for producing dies for use in compacting permanent magnet alloy**: In this patent, DuPlessis outlines a procedure for creating a die utilized in compacting permanent magnet alloy powder. The method requires placing a mixture of magnetic or non-magnetic alloy particles in a heated container, then carrying out hot-isostatic compaction to obtain a fully dense die blank. This innovative approach may also incorporate carbide particles and stainless steel cladding for enhanced durability.
Career Highlights
DuPlessis has established himself in the industry through his work at Crucible Materials Corporation, where he applies his expertise in material science and engineering. His role has allowed him to be at the forefront of advancements in permanent magnet production, thus paving the way for improved designs and applications.
Collaborations
During his career, DuPlessis has collaborated with notable coworkers such as Vijay K Chandhok and Robert F Krause. Their collective efforts have contributed to the successful development of innovative technologies in the realm of magnetics, showcasing the importance of teamwork in the invention process.
Conclusion
John J DuPlessis's contributions to permanent magnet technology highlight his role as a significant inventor in his field. His innovative methods not only improve manufacturing processes but also enhance the performance of permanent magnets in various applications. As advancements in technology continue, the work of inventors like DuPlessis remains essential for driving innovation forward.