CPC Subgroup Additional Only
F23N 2235/12 Fuel valves
Full Title
Valves, nozzles or pumps > Fuel valves
6 direct subcodes
Child Classifications
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- F23N 2235/14 electromagnetically operated
- F23N 2235/16 variable flow or proportional valves
- F23N 2235/18 Groups of two or more valves
- F23N 2235/20 Membrane valves
- F23N 2235/22 cooperating with magnets
- F23N 2235/24 Valve details
Top Applicants
Top 10 applicants by patent filingsfor class F23, 2013–2023, worldwide · Source: EPO PATSTAT
- GE (GENERAL ELECTRIC COMPANY) US 2,581
- UNITED TECHNOLOGIES CORPORATION (UTC) US 1,180
- SIEMENS DE 1,157
- GE (GENERAL ELECTRIC COMPANY) 994
- XIAN THERMAL POWER RESEARCH INSTITUTE COMPANY 769
- MITSUBISHI HEAVY INDUSTRIES JP 701
- MITSUBISHI HITACHI POWER SYSTEMS JP 695
- RAYTHEON TECHNOLOGIES CORPORATION US 587
- NINGBO FOTILE KITCHENWARE COMPANY 543
- GENERAL ELECTRIC TECHNOLOGY CH 490