CPC Main Group Additional Only
F23G 2209/00 Specific waste
11 direct subcodes
Child Classifications
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- F23G 2209/10 Liquid waste
- F23G 2209/12 Sludge, slurries or mixtures of liquids
- F23G 2209/14 Gaseous waste or fumes
- F23G 2209/16 Warfare materials, e.g. ammunition
- F23G 2209/18 Radioactive materials
- F23G 2209/20 Medical materials
- F23G 2209/22 Waste papers
- F23G 2209/24 Contaminated soil; foundry sand
- F23G 2209/26 Biowaste
- F23G 2209/28 Plastics or rubber like materials
- F23G 2209/30 Solid combustion residues, e.g. bottom or flyash
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