Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups

Introduced: September 1968

Last revised: January 2006

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 39/00 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

Additional Content

Pumps for raising fluids from great depths

8 direct subcodes

Child Classifications

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F04B 39/02 Lubrication
F04B 39/04 Measures to avoid lubricant contaminating the pumped fluid
F04B 39/06 Cooling; Heating; Prevention of freezing
F04B 39/08 Actuation of distribution members
F04B 39/1 Adaptation or arrangement of distribution members
F04B 39/12 Casings; Cylinders; Cylinder heads; Fluid connections
F04B 39/14 Provisions for readily assembling or disassembling
F04B 39/16 Filtration; Moisture separation

Top Applicants

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

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