Electron-beam or ion-beam tubes for localised treatment of objects

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof > Electron-beam or ion-beam tubes for localised treatment of objects

CPC:

Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof (H01J33/00, H01J40/00, H01J41/00, H01J47/00, H01J49/00 take precedence) > Electron-beam or ion-beam tubes for localised treatment of objects

Of 8 combined children, 7 exist in both systems.

1 codes are CPC-only extensions.

3 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1974.

Child Classifications

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H01J 37/3002 +2 CPC CPC only CPC only
H01J 37/301 Arrangements enabling beams to pass between regions of different pressure since 1980 IPC+CPC Available in IPC and CPC
H01J 37/302 Controlling tubes by external information, e.g. program control (H01J37/304 takes precedence) since 1980 +1 CPC IPC+CPC Available in IPC and CPC
H01J 37/304 Controlling tubes by information coming from the objects , e.g. correction signals since 1980 +1 CPC IPC+CPC Available in IPC and CPC
H01J 37/305 for casting, melting, evaporating, or etching since 1974 +1 CPC IPC+CPC Available in IPC and CPC
H01J 37/31 for cutting or drilling since 1974 IPC+CPC Available in IPC and CPC
H01J 37/315 for welding since 1974 IPC+CPC Available in IPC and CPC
H01J 37/317 for changing properties of the objects or for applying thin layers thereon, e.g. for ion implantation (H01J37/36 takes precedence) since 1980 +3 CPC IPC+CPC Available in IPC and CPC