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IPC Subgroup
F04B 49/22

by means of valves

Introduced: January 1995

Last revised: January 2006

Full Title

Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups > by means of valves

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
Subclass:
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS

Filing statistics

IPC F04B 49/22 belongs to the parent subclass F04B, which recorded 172,314 patent applications worldwide between 2013 and 2023. Annual filings grew from 10,823 in 2013 to 18,441 in 2023 (+70%), peaking at 20,061 applications in 2020. The most active applicants in class F04 are GREE ELECTRIC APPLIANCES (5,351 applications), LG ELECTRONICS (3,502 applications) and ROBERT BOSCH (3,011 applications).

Source: EPO PATSTAT, worldwide filings

1 direct subcode

Child Classifications

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Top Applicants

Top 10 applicants by patent filingsfor class F04, 2013–2023, worldwide · Source: EPO PATSTAT

  1. GREE ELECTRIC APPLIANCES 5,351
  2. LG ELECTRONICS KR 3,502
  3. ROBERT BOSCH DE 3,011
  4. MIDEA 2,258
  5. MITSUBISHI ELECTRIC CORPORATION JP 1,663
  6. ZHUHAI LANDA COMPRESSOR COMPANY 1,639
  7. GREE ELECTRIC APPLIANCES, INC.OF ZHUHAI 1,573
  8. ZHUHAI GREE ENERGY-SAVING REFRIGERATION TECHNOLOGY RESEARCH CENTER COMPANY 1,536
  9. TOYOTA INDUSTRIES CORPORATION 1,347
  10. DAIKIN INDUSTRIES 1,325