MAGNETS

**Definition:** This place covers:

Magnets or magnetic bodies characterised by the magnetic materials therefor. Selection of materials for their magnetic properties ( H01F1/00 ).

Thin magnetic films ( H01F10/00 ).

Permanent magnets ( H01F7/00 ).

Electromagnets ( H01F7/00 ) including, for example, superconductive magnets ( H01F6/00 ); details thereof such as coils ( H01F5/00 ), cores, yokes, and armatures ( H01F3/00 ).

Fixed and variable transformers including, for example, superconductive or cryogenic transformers; adaptations thereof for specific applications or functions; details thereof ( H01F19/00 , H01F21/00 , H01F27/00 , H01F29/00 , H01F30/00 , H01F36/00 , H01F38/00 ).

Fixed and variable inductances; adaptations thereof for specific applications or functions; details thereof ( H01F17/00 , H01F21/00 , H01F27/00 , H01F29/00 , H01F37/00 , H01F38/00 ).

Apparatus or processes for magnetising or demagnetising ( H01F13/00 ).

Apparatus or processes specially adapted for manufacturing or assembling devices covered by this subclass ( H01F41/00 ).

Further information:

Groups H01F17/00 - H01F38/00 (with the exception of groups H01F27/42 and H01F38/32 ) cover only structural or constructional aspects of transformers, inductive reactors, chokes or the like. These groups do not cover circuit arrangement of such devices, which are covered by the appropriate functional places.

**Glossary:** - compound: homogenous substance comprising at least two elements, having a non-metallic character and a specific (fixed) composition ratio, including also intermetallic compounds.