Complex sentence: Rust-oleum, maker of protective paints and coatings for both home and industry, was founded by in 1921 Robert Fergusson, after noticed that when raw fish oil spilled on rusty metal decks, corrosion stopped spreading.
Split into simpler sentences: Rust-oleum is a maker of protective paints and coatings for both home and industry. It was founded by in 1921 Robert Fergusson, after he noticed that when raw fish oil spilled on rusty metal decks, corrosion stopped spreading.