Timothy Noonan and his son Frank were the proprietors of these products. Some time after 1880, the company became known as "T. Noonan & Sons". In 1913, they registered "Petrole" (see Petrole) as a Trade Mark. At that time, Frank M. Noonan was speaking for the company. In 1920, Frank M. Noonan, registered the Trade Mark "Zepp's," and claimed to have been using it since 1876. Fike also indicated that the Zepp's Dandruff Cure was advertised in 1930 and 1942.