Complex sentence: Muralo's product is dry powder, to be mixed with water by the user to form putty or paste, was brought to market in 1927, then patented and trademarked in 1928.
Split into simpler sentences: Muralo's product is dry powder, to be mixed with water by the user to form putty or paste. It was brought to market in 1927, then patented and trademarked in 1928.