CPC Main Group Additional Only
F23N 2223/00 Signal processing; Details thereof
Filing statistics
CPC F23N 2223/00 belongs to the parent subclass F23N, which recorded 13,537 patent applications worldwide between 2013 and 2023. Annual filings declined from 1,173 in 2013 to 1,139 in 2023 (-3%), peaking at 1,525 applications in 2020. The most active applicants in class F23 are GE (GENERAL ELECTRIC COMPANY) (2,581 applications), UNITED TECHNOLOGIES CORPORATION (UTC) (1,180 applications) and SIEMENS (1,157 applications).
Source: EPO PATSTAT, worldwide filings
23 direct subcodes
Child Classifications
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- F23N 2223/02 Multiplex transmission
- F23N 2223/04 Memory
- F23N 2223/06 Sampling
- F23N 2223/08 Microprocessor; Microcomputer
- F23N 2223/10 Correlation
- F23N 2223/12 Integration
- F23N 2223/14 Differentiation
- F23N 2223/16 Measuring bridge
- F23N 2223/18 Chopper
- F23N 2223/20 Opto-coupler
- F23N 2223/22 Timing network
- F23N 2223/30 Switches
- F23N 2223/34 with feedforward processing
- F23N 2223/36 PID signal processing
- F23N 2223/38 Remote control
- F23N 2223/40 Simulation
- F23N 2223/42 Function generator
- F23N 2223/44 Optimum control
- F23N 2223/46 Identification
- F23N 2223/48 Learning / Adaptive control
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