CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION

Introduced: September 1968

Description

F23G covers furnaces designed for cremation of human or animal remains, as well as combustion systems for disposing of waste materials or burning low-grade fuels. This subclass includes the structural design, heat management, emission control, and operational features of crematory equipment and waste-to-energy combustion installations. Technologies addressing ash handling, temperature regulation, and pollution mitigation in such facilities fall within this scope, whereas general industrial furnaces for standard fuel combustion are classified elsewhere under F23.

Title

Titles differ between systems:

IPC: CREMATION FURNACES; CONSUMING WASTE OR LOW GRADE FUELS BY COMBUSTION

CPC: CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION

Full Title

Full titles differ between systems:

IPC:

CREMATION FURNACES; CONSUMING WASTE OR LOW GRADE FUELS BY COMBUSTION

CPC:

CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION

Additional Content IPC

Glossary

air a mixture of gases containing free oxygen and able to promote or support combustion primary air air supplied to the burning fuel in order to liberate combustible gases secondary air air supplied to the combustible gases liberated by the primary air in order to complete their combustion. The expression "secondary air" covers "tertiary air" etc. Burner burners a device by which fluid fuel or solid fuel suspended in air is passed to a combustion space where it burns to produce a self-supporting flame. A burner includes the means for feeding air that are arranged in immediate connection with a fuel feeding conduit, for example concentric with it. Combustion a heat-producing sequence of chemical reactions between a burnable substance and molecular oxygen, e.g. in air, in most cases generating light in the form of flames or a glow Combustion chamber combustion chambers a chamber in which fuel is burned to establish a self-supporting fire or flame and which surrounds that fire or flame combustion zone combustion zones the part of a combustion apparatus where the reaction takes place between air and fuel fuel Fuels any combustible material that can be burned, regardless of whether the main purpose of burning it is for releasing energy therefrom or for disposing of it or rendering it less harmful waste an undesired material that can be consumed by combustion for the primary purpose of disposing of it or rendering it less harmful, and not solely for releasing energy therefrom

Limiting references

Incinerating radioactive waste

Application references

Disposal of solid waste Reclamation of contaminated soil Gas turbine plants Generating steam Generating combustion products of high temperature or high pressure Domestic stoves or ranges for local heating or cooking , Apparatus for heat treatment of materials or articles

CPC subdivides this area 5x more granularly than IPC with 11 additional codes.

11 codes are CPC-only extensions.

Note: 11 CPC extensions are marked as secondary classification only.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

Navigate with arrow keys, Enter to open

F23G 1/00 Furnaces for cremation of human or animal carcasses IPC+CPC Available in IPC and CPC
F23G 2200/00 Waste incineration 2nd only CPC only CPC only
F23G 2201/00 Pretreatment 2nd only +9 CPC CPC only CPC only
F23G 2202/00 Combustion 2nd only +7 CPC CPC only CPC only
F23G 2203/00 Furnace arrangements 2nd only +12 CPC CPC only CPC only
F23G 2204/00 Supplementary heating arrangements 2nd only +2 CPC CPC only CPC only
F23G 2205/00 Waste feed arrangements 2nd only +6 CPC CPC only CPC only
F23G 2206/00 Waste heat recuperation 2nd only +2 CPC CPC only CPC only
F23G 2207/00 Control 2nd only +6 CPC CPC only CPC only
F23G 2208/00 Safety aspects 2nd only +1 CPC CPC only CPC only
F23G 2209/00 Specific waste 2nd only +11 CPC CPC only CPC only
F23G 2900/00 Special features of, or arrangements for incinerators 2nd only +36 CPC CPC only CPC only
F23G 5/00 Incineration of waste (of specific waste F23G7/00); Incinerator constructions; Details, accessories or control therefor +3 CPC IPC+CPC Available in IPC and CPC
F23G 7/00 Incinerators or other apparatus for consuming industrial waste, e.g. chemicals (incinerator closets A47K11/02; oxidation of sludge C02F11/06; burners in general, burner details F23D; incinerating radioactive waste G21F9/00) +3 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