CPC Main Group
F04B 39/00 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 F04B25/00 - F04B37/00
11 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- F04B 39/02 Lubrication (of machines or engines in general F01M)
- 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 39/10 Adaptations or arrangements 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
- 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