the fluid medium being mixed with, or generated from the liquid to be pumped

Introduced: September 1968

Title

Titles differ between systems:

IPC: the fluid medium being mixed with, or generated from, the liquid to be pumped

CPC: the fluid medium being mixed with, or generated from the liquid to be pumped

Full Title

Full titles differ between systems:

IPC:

Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped > the fluid medium being mixed with, or generated from, the liquid to be pumped

CPC:

Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped (using only negative pressure F04F3/00; jet pumps F04F5/00; siphons F04F10/00) > the fluid medium being mixed with, or generated from the liquid to be pumped

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

Child Classifications

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F04F 1/20 specially adapted for raising liquids from great depths, e.g. in wells IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class F04,2013–2023, worldwide · Source: EPO PATSTAT

LG ELECTRONICS KR 3,855
ROBERT BOSCH DE 3,549
GREE ELECTRIC APPLIANCES 2,273
GE (GENERAL ELECTRIC COMPANY) US 2,126
MITSUBISHI ELECTRIC CORPORATION JP 1,881
UNITED TECHNOLOGIES CORPORATION (UTC) US 1,866
SAFRAN AIRCRAFT ENGINES FR 1,499
MITSUBISHI HEAVY INDUSTRIES JP 1,258
TOYOTA INDUSTRIES CORPORATION JP 1,247
ATLAS COPCO AIRPOWER BE 1,168