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 sub-classes for the operations)
 H05F

Note(s)

This sub-class deals with methods or arrangements for preventing the formation of electrostatic charges on bodies or for carrying-off these charges after their formation. Specific applications of these methods or arrangements, e.g. during the manufacture of artificial fibres or films, are dealt with in the relevant sub-classes.

 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
Using naturally-occurring electricity