Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties

Filing statistics

CPC G05F 3/00 belongs to the parent subclass G05F, which recorded 34,553 patent applications worldwide between 2013 and 2023. Annual filings declined from 2,962 in 2013 to 2,659 in 2023 (-10%), peaking at 3,775 applications in 2017. The most active applicants in class G05 are FANUC (6,367 applications), SIEMENS (5,963 applications) and FANUC (4,535 applications).

Source: EPO PATSTAT, worldwide filings