DIFF Main Group
H05B 3/00 Ohmic-resistance heating
Introduced: September 1968
Of 14 combined children, 9 exist in both systems.
5 codes are CPC-only extensions.
4 shared codes have differing titles between IPC and CPC.
Child Classifications
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- H05B 3/10 Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor IPC+CPC Available in IPC and CPC
- H05B 3/20 Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater (H05B3/62, H05B3/68, H05B3/78, H05B3/84 take precedence) IPC+CPC Available in IPC and CPC
- H05B 3/40 Heating elements having the shape of rods or tubes (H05B3/62, H05B3/68, H05B3/78 take precedence) IPC+CPC Available in IPC and CPC
- H05B 3/60 Heating arrangements wherein the heating current flows through granular powdered or fluid material, e.g. for salt-bath furnace, electrolytic heating (H05B3/38 takes precedence) IPC+CPC Available in IPC and CPC
- H05B 3/62 Heating elements specially adapted for furnaces (H05B3/60 takes precedence; arrangements of elements for electric heating in or on furnaces using ohmic resistance heating F27D11/02) IPC+CPC Available in IPC and CPC
- H05B 3/68 Heating arrangements specially adapted for cooking plates or analogous hot-plates +5 CPC IPC+CPC Available in IPC and CPC
- H05B 3/78 Heating arrangements specially adapted for immersion heating IPC+CPC Available in IPC and CPC
- H05B 3/84 Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields since 1990 +1 CPC IPC+CPC Available in IPC and CPC