Metallium (ASX:MTM) said it strengthened its intellectual property portfolio during the March quarter via an expanded licensing agreement with Rice University, incorporating additional flash joule heating (FJH) applications, including recovery pathways for antimony and platinum group metals, as well as solar cell recycling, according to a Monday Australian bourse filing.

The company completed over 40 FJH processing campaigns over the quarter across a range of feedstocks, including printed circuit boards and catalytic converter scrap, generating data and insights into system behavior, the filing said. Initial commercial-scale feedstock was delivered to site, it added.

Metallium's shares fell past 4% in recent trading on Monday.