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CPC Subgroup
H02M 7/82

using open-spark devices, e.g. Marx rectifier

Full Title

Conversion of AC power input into DC power output; Conversion of DC power input into AC power output > with possibility of reversal > by static converters > using open-spark devices, e.g. Marx rectifier

Filing statistics

CPC H02M 7/82 belongs to the parent subclass H02M, which recorded 196,111 patent applications worldwide between 2013 and 2023. Annual filings grew from 11,818 in 2013 to 21,110 in 2023 (+79%), peaking at 21,349 applications in 2022. The most active applicants in class H02 are SGCC(STATE GRID CORPORATION OF CHINA) (24,515 applications), MITSUBISHI ELECTRIC CORPORATION (11,346 applications) and SIEMENS (9,026 applications).

Source: EPO PATSTAT, worldwide filings

Top Applicants

Top 10 applicants by patent filingsfor class H02, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 24,515
  2. MITSUBISHI ELECTRIC CORPORATION JP 11,346
  3. SIEMENS DE 9,026
  4. ROBERT BOSCH DE 9,005
  5. SAMSUNG ELECTRONICS COMPANY KR 6,729
  6. GUANGDONG POWER GRID CORPORATION 5,740
  7. DENSO CORPORATION JP 5,077
  8. LG ELECTRONICS KR 5,041
  9. LG INNOTEK COMPANY KR 4,442
  10. TOYOTA MOTOR CORPORATION 4,349