Steam superheaters characterised by constructional features; Details or component parts thereof

Filing statistics

CPC F22G 3/00 belongs to the parent subclass F22G, which recorded 2,907 patent applications worldwide between 2013 and 2023. Annual filings grew from 172 in 2013 to 308 in 2023 (+79%), peaking at 370 applications in 2016. The most active applicants in class F22 are XIAN THERMAL POWER RESEARCH INSTITUTE COMPANY (544 applications), SIEMENS (306 applications) and PHILIP MORRIS PRODUCTS (258 applications).

Source: EPO PATSTAT, worldwide filings