David W Marshall

Title: The Innovative Mind of David W. Marshall

Introduction

David W. Marshall, an accomplished inventor from North Reading, Massachusetts, has made significant contributions to the field of material science with a focus on anti-fouling technologies. With a total of 9 patents to his name, Marshall's inventions address critical challenges faced by marine vessels and water transport systems.

Latest Patents

Among his latest inventions is an innovative Anti-fouling and anti-sliming gel coat. This gel coat is a polymeric composition that contains copper flake in sufficient quantities to render the entire thickness of the material electrically conductive. The copper flake is treated to remove oxides and is reacted with conventional epoxy resins modified with an epoxidized polyol. This formulation not only exhibits outstanding anti-fouling properties but also possesses anti-sliming properties. The composition serves effectively as a gel coat for ships, boats, and other watercraft, requiring no additional anti-fouling or anti-sliming treatment for several years. Furthermore, the composition proves advantageous as a liner for pipes and conduits used to transport both salt and fresh water, where fouling poses a significant issue. Notably, there is an embodiment of the invention that cures underwater, providing utility in patching holes in copper-clad hulls while vessels remain in water.

Another noteworthy patent is related to a method for achieving particle-to-particle contact in anti-fouling coatings. In this innovation, the cleaned copper flake is incorporated into an uncured water-insoluble polymer. When applied to marine structures, such as boat hulls, the resulting coating demonstrates exceptional anti-fouling properties. The preferred method involves using a strippable carrier that allows the coating to be applied and cured underwater.

Career Highlights

David W. Marshall has an impressive career history, having worked with reputable corporations such as Kennecott Copper Corporation and Kennecott Corporation. His expertise in polymer compositions and coatings has positioned him as a notable figure in the innovation landscape, particularly in marine applications.

Collaborations

Throughout his career, Marshall has collaborated with esteemed professionals, including William R. O'Day, Jr. and Jagdish Chandra Agarwal. These partnerships have further enriched his research and development efforts, contributing to the success of his patented technologies.

Conclusion

David W. Marshall exemplifies the spirit of innovation through his groundbreaking work in anti-fouling and anti-sliming technologies. His contributions significantly benefit marine vessels and infrastructure, showcasing the power of creativity and scientific application in addressing real-world challenges. As he continues to explore new avenues in material science, the impact of his inventions is likely to resonate for years in the industries he serves.