Housings

Full Title

Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (machines or pumps with pistons coacting within one cylinder F04B3/00) > having cylinder axes coaxial with, or parallel or inclined to, main shaft axis > having rotary cylinder block > Details or component parts > Housings

1 direct subcode

Child Classifications

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F04B 1/2071 Bearings for cylinder barrels

Top Applicants

Top 10 applicants by patent filingsfor 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