having a vertical, substantially cylindrical, combustion chamber

Introduced: January 1985

Title

Titles differ between systems:

IPC: with combustion in a vertical, substantially cylindrical, combustion chamber

CPC: having a vertical, substantially cylindrical, combustion chamber

Full Title

Full titles differ between systems:

IPC:

Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels > with combustion in a vertical, substantially cylindrical, combustion chamber

CPC:

Incineration of waste (of specific waste F23G7/00); Incinerator constructions; Details, accessories or control therefor > having a vertical, substantially cylindrical, combustion chamber

Of 3 combined children, 2 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 1985.

Child Classifications

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F23G 5/245 CPC only CPC only
F23G 5/26 having rotating bottom since 1985 IPC+CPC Available in IPC and CPC
F23G 5/28 having raking arms since 1985 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