CPC Subgroup
F23D 14/56 for spreading the flame over an area, e.g. for desurfacing of solid material, for surface hardening or for heating workpieces
Full Title
Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid > Details > Nozzles > for spreading the flame over an area, e.g. for desurfacing of solid material, for surface hardening or for heating workpieces
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