Feed-water supply not provided for in other main groups

Filing statistics

CPC F22D 11/00 belongs to the parent subclass F22D, which recorded 5,699 patent applications worldwide between 2013 and 2023. Annual filings grew from 227 in 2013 to 702 in 2023 (+209%), peaking at 774 applications in 2020. 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