1767-Feb.-16: Sieur Chartier received a formal Royal Patent from the King authorizing the use of his secret composition to protect iron from rust.

1767-Feb.-16: Sieur Chartier received a formal Royal Patent from the King authorizing the use of his secret composition to protect iron from rust. The product’s effectiveness was validated by certificates from esteemed commissioners of the Royal Academy of Sciences, including MM. Duhamel and Baron. This chemical advancement promised to preserve metallic tools and equipment from the corrosive effects of air and saltwater in the Caribbean. Technological innovations like this were essential for extending the life of the colony’s maritime and agricultural infrastructure.