Rotors specially for elastic fluids

Introduced: September 1968

Title

Titles differ between systems:

IPC: Rotors specially adapted for elastic fluids

CPC: Rotors specially for elastic fluids

Full titles differ between systems:

IPC:

Details, component parts, or accessories > Rotors specially adapted for elastic fluids

CPC:

Details, component parts, or accessories (machine elements in general F16) > Rotors specially for elastic fluids

Of 4 combined children, 2 exist in both systems.

2 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

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F04D 29/263 CPC only CPC only
F04D 29/266 CPC only CPC only
F04D 29/28 for centrifugal or helico-centrifugal pumps +5 CPC IPC+CPC Available in IPC and CPC
F04D 29/32 for axial flow pumps +2 CPC IPC+CPC Available in IPC and CPC

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

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