Passages or apertures for delivering primary air for combustion (baffles or deflectors in air inlets F23M9/02)

Filing statistics

CPC F23L 1/00 belongs to the parent subclass F23L, which recorded 12,448 patent applications worldwide between 2013 and 2023. Annual filings grew from 880 in 2013 to 1,048 in 2023 (+19%), peaking at 1,464 applications in 2020. The most active applicants in class F23 are GE (GENERAL ELECTRIC COMPANY) (2,581 applications), UNITED TECHNOLOGIES CORPORATION (UTC) (1,180 applications) and SIEMENS (1,157 applications).

Source: EPO PATSTAT, worldwide filings