Keith G Johnson

Title: Innovations by Keith G Johnson

Introduction

Keith G Johnson is an accomplished inventor based in Pittsburgh, PA (US). He has made significant contributions to the field of polymer technology, particularly in the development of structural profiles and foam profiles. With a total of 3 patents to his name, Johnson's work showcases his expertise and innovative spirit.

Latest Patents

Johnson's latest patents include an "Apparatus for making structural profiles" and an "Apparatus for making structural foam profiles." Both inventions utilize an extruder to deliver softened thermoplastic resin material containing a foaming or expanding agent. In these processes, the resin material is initially under pressure and unexpanded in the extruder. It is then delivered into an unconfined zone of lower pressure for partial expansion. The partially expanded resin material is drawn by a puller mechanism through a chilled shaping or sizing die, which has a cross-sectional dimension smaller than that of the material in the unconfined zone. This innovative technique allows the material to continue expanding within the profile, resulting in the development of porosity in the core while the surface layer cools and hardens into a substantially unexpanded structural shell.

Career Highlights

Johnson is currently associated with Arco Polymers, Inc., where he continues to push the boundaries of polymer technology. His work has not only advanced the field but has also provided practical solutions for various applications in manufacturing and construction.

Conclusion

Keith G Johnson's contributions to the field of polymer technology through his innovative patents demonstrate his commitment to advancing the industry. His work continues to inspire future innovations in structural materials.