This is why they are often used as anti-corrosion agents and rustproofing. Casement doors were subjected to additional rustproofing special compound. It also didn't had any rustproofing and interior amenities. The model was unpopular, due to reliability and rustproofing issues. The company was renamed Ziebart Auto Truck Rustproofing Company. Uneven rustproofing has also been reported. Kurt Ziebart [27 July 1920-] is best known for inventing the rustproofing process for automobiles. In 1963, he sold his rustproofing company to an investor group. In 1963, Kurt Ziebart sold his rustproofing company to an investor group. The process is often called "Ziebart-ing" or "Ziebart-ed", the generic term for rustproofing. On the early Vegas, Fisher's rustproofing process did not treat the entire chassis. The German-born American Kurt Ziebart was the inventor of the rustproofing process for automobiles.