430 ILCS 10/2

The term "person" shall mean and include any person, persons, firm, firms, corporation or corporations.

The term "owner" shall mean and include (a) any person who holds a written bill of sale or other instrument under which title to the container was transferred to such person, (b) any person who holds a paid or receipted invoice showing purchase and payment of such container, (c) any person whose name, initials, mark, or other identifying device has been plainly and legibly stamped or otherwise shown upon the surface of such container for a period of not less than one year prior to the final enactment and approval of this act, or (d) any manufacturer of a container who has not sold or transferred ownership thereof by written bill of sale or otherwise;

The term "liquefied petroleum gas" as used in this Act shall mean and include any material which is composed predominately of any of the following hydrocarbons or mixtures of the same: propane, propylene, butanes (normal butane and iso-butane), and butylenes.