IPC Classification

Class code (prefix) Descriptions Number of results
F27D 1/00 Casings; Linings; Walls; Roofs
F27D 1/02 Crowns; Roofs
F27D 1/04 Casings; Linings; Walls; Roofs characterised by the form of the bricks or blocks used
F27D 1/06 Composite bricks or blocks
F27D 1/08 Bricks or blocks with internal reinforcement or metal backing
F27D 1/10 Monolithic linings; Supports therefor
F27D 1/12 Casings; Linings; Walls; Roofs incorporating cooling arrangements
F27D 1/14 Supports for linings
F27D 1/16 Making or repairing linings
F27D 1/18 Door frames; Doors, lids, removable covers
F27D 3/00 Charging; Discharging; Manipulation of charge
F27D 3/02 Skids or tracks for heavy objects
F27D 3/04 Ram or pusher apparatus
F27D 3/06 Charging or discharging machines on travelling carriages
F27D 3/08 Screw feeders; Screw dischargers
F27D 3/10 Charging directly from hoppers or shoots
F27D 3/12 Travelling or movable supports or containers for the charge
F27D 3/14 Charging or discharging liquid or molten material
F27D 3/15 Tapping equipment; Equipment for removing slag
F27D 3/16 Introducing a fluid jet or current into the charge
F27D 3/18 Charging particulate material using a fluid carrier
F27D 5/00 Supports, screens, or the like for the charge within the furnace
F27D 7/00 Forming, maintaining, or circulating atmospheres in heating chambers
F27D 7/02 Supplying steam, vapour, gases, or liquids
F27D 7/04 Circulating atmospheres by mechanical means
F27D 7/06 Forming or maintaining special atmospheres or vacuum within heating chambers
F27D 9/00 Cooling of furnaces or of charges therein
F27D 11/00 Arrangement of elements for electric heating in or on furnaces
F27D 11/02 Ohmic resistance heating
F27D 11/04 Ohmic resistance heating with direct passage of current through the material being heated
F27D 11/06 Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
F27D 11/08 Heating by electric discharge, e.g. arc discharge
F27D 11/10 Disposition of electrodes
F27D 11/12 Arrangement of elements for electric heating in or on furnaces with electromagnetic fields acting directly on the material being heated
F27D 13/00 Apparatus for preheating charges; Arrangements for preheating charges
F27D 15/00 Handling or treating discharged material; Supports or receiving chambers therefor
F27D 15/02 Cooling
F27D 17/00 Arrangement for using waste heat; Arrangement for using, or disposing of, waste gases
F27D 19/00 Arrangement of controlling devices
F27D 21/00 Arrangement of monitoring devices; Arrangements of safety devices
F27D 21/02 Observation or illuminating devices
F27D 21/04 Arrangements of indicators or alarms
F27D 25/00 Devices for removing incrustations
F27D 27/00 Stirring devices for molten material
F27D 99/00 Subject matter not provided for in other groups of this subclass