Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F

Filing statistics

CPC B21C 51/00 belongs to the parent subclass B21C, which recorded 38,570 patent applications worldwide between 2013 and 2023. Annual filings grew from 1,757 in 2013 to 3,939 in 2023 (+124%), peaking at 4,825 applications in 2020. The most active applicants in class B21 are JFE STEEL (2,667 applications), NIPPON STEEL CORPORATION (2,049 applications) and POSCO (POHANG IRON AND STEEL COMPANY) (1,967 applications).

Source: EPO PATSTAT, worldwide filings