** Shares of Hazer Group HZR.AX jump as much as 11.4% to A$0.390, posting their biggest intraday pct gain since Dec. 3, 2024
** Climate tech firm says it secured a Japanese patent for a method of hydrogen production from methane or natural gas, utilising iron oxide as a catalyst
** CEO says the patented protection fortifies co's position in low-cost, clean hydrogen and graphite production in the Japanese market
** Stock fell 45.3% last year
(Reporting by Kumar Tanishk in Bengaluru)
((Tanishk.Kumar@thomsonreuters.com;))