FEEDING FUEL TO COMBUSTION APPARATUS (fuel feeders specially adapted for fluidised bed combustion apparatus F23C10/22)

Introduced: September 1968

Description

F23K covers fuel supply systems and mechanisms for delivering solid, liquid, or gaseous fuels into combustion chambers of furnaces, boilers, engines, and similar equipment. This subclass includes fuel feeding devices such as injectors, burners, stokers, and fuel metering systems, as well as related control and regulation mechanisms for managing fuel flow rates and distribution. The classification excludes fuel preparation and treatment processes (covered under F23D) and focuses specifically on the mechanical and functional aspects of fuel introduction into the combustion zone.

Title

Titles differ between systems:

IPC: FEEDING FUEL TO COMBUSTION APPARATUS

CPC: FEEDING FUEL TO COMBUSTION APPARATUS (fuel feeders specially adapted for fluidised bed combustion apparatus F23C10/22)

Full Title

Full titles differ between systems:

IPC:

FEEDING FUEL TO COMBUSTION APPARATUS

CPC:

FEEDING FUEL TO COMBUSTION APPARATUS (fuel feeders specially adapted for fluidised bed combustion apparatus F23C10/22)

CPC subdivides this area 3x more granularly than IPC with 6 additional codes.

6 codes are CPC-only extensions.

Note: 6 CPC extensions are marked as secondary classification only.

Child Classifications

Navigate with arrow keys, Enter to open

F23K 1/00 Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus IPC+CPC Available in IPC and CPC
F23K 2200/00 Pretreatment and supply of solid fuel 2nd only CPC only CPC only
F23K 2201/00 Pretreatment of solid fuel 2nd only +4 CPC CPC only CPC only
F23K 2203/00 Feeding arrangements 2nd only +6 CPC CPC only CPC only
F23K 2300/00 Pretreatment and supply of liquid fuel 2nd only +2 CPC CPC only CPC only
F23K 2400/00 Pretreatment and supply of gaseous fuel 2nd only +2 CPC CPC only CPC only
F23K 2900/00 Special features of, or arrangements for fuel supplies 2nd only +17 CPC CPC only CPC only
F23K 3/00 Feeding or distributing of lump or pulverulent fuel to combustion apparatus IPC+CPC Available in IPC and CPC
F23K 5/00 Feeding or distributing other fuel to combustion apparatus +1 CPC IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class F23,2013–2023, worldwide · Source: EPO PATSTAT

GE (GENERAL ELECTRIC COMPANY) US 2,124
XIAN THERMAL POWER RESEARCH INSTITUTE COMPANY 1,369
NINGBO FOTILE KITCHENWARE COMPANY 1,363
SIEMENS DE 997
UNITED TECHNOLOGIES CORPORATION (UTC) US 937
GE (GENERAL ELECTRIC COMPANY) 898
VATTI 815
CHINESE ACADEMY OF SCIENCES 719
RINNAI COMPANY 708
MITSUBISHI HITACHI POWER SYSTEMS 670

Top Applicants (CPC)

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