H
SECTION H — ELECTRICITY
 H05
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
 H05F
STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY (electrostatic machines H02N; uses of electricity in performing operations, e.g. precipitation, see the relevant subclasses for the operations)
 H05F

Note(s)

  1. This subclass covers methods or arrangements for preventing the formation of electrostatic charges on bodies or for carrying-off these charges after their formation.
  2. This subclass does not cover specific applications of the above-mentioned methods or arrangements, e.g. during the manufacture of artificial fibres or films, which are covered by the relevant subclasses.
 H05F 1/00
Preventing the formation of electrostatic charges
 H05F 1/02
·  by surface treatment
 H05F 3/00
Carrying-off electrostatic charges (from living beings A61N 1/14)
 H05F 3/02
·  by means of earthing connections
 H05F 3/04
·  by means of spark gaps or other discharge devices (devices providing for corona discharge per se H01T 19/00)  [2]
 H05F 3/06
·  by means of ionising radiation
 H05F 7/00
Use of naturally-occurring electricity