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IPC 7
 
H01F-H01F00720
  H01F 10/00 - H01F 41/34  

SECTION H – ELECTRICITY


H 01BASIC ELECTRIC ELEMENTS


H 01 FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES (ceramics based on ferrites C04B 35/26; alloys C22C; thermomagnetic devices H01L 37/00; loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers H04R) [2]


Note

 Groups H01F 17/00 to H01F 38/00 (with the exception of groups H01F 27/42 and H01F 38/32) 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.  [6]


Subclass Index

MAGNETS, ELECTROMAGNETS 

Characterised by the magnetic material 

H01F 1/00 

Cores, yokes, armatures 

H01F 3/00 

Coils 

H01F 5/00 

Superconducting coils or magnets 

H01F 6/00 

Magnets 

H01F 7/00 

Magnetising, demagnetising 

H01F 13/00 

Manufacture 

H01F 41/00 

THIN FILMS 

H01F 10/00 

FIXED INDUCTANCES OR TRANSFORMERS 

Of the signal type 

H01F 17/00, H01F 19/00 

Other than of the signal type 

H01F 30/00, H01F 37/00 

Manufacture 

H01F 41/00 

VARIABLE INDUCTANCES OR TRANSFORMERS 

Of the signal type 

H01F 21/00 

Other than of the signal type 

H01F 29/00 

Manufacture 

H01F 41/00 

DETAILS OF TRANSFORMERS OR INDUCTANCES, IN GENERAL 

H01F 27/00 

SUPERCONDUCTIVE OR CRYOGENIC TRANSFORMERS 

H01F 36/00 

ADAPTATIONS OF TRANSFORMERS OR INDUCTANCES FOR SPECIFIC APPLICATIONS OR FUNCTIONS 

H01F 38/00 



1/

00Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties (thin magnetic films characterised by their composition H01F 10/10)

1/

01.of inorganic materials (H01F 1/44 takes precedence)  [6]

Note

 Group H01F 1/40 takes precedence over H01F 1/03 to H01F 1/38.  [6]

1/

03..characterised by their coercivity  [6]

1/

032...of hard-magnetic materials  [6]

1/

04....metals or alloys  [6]

1/

047.....Alloys characterised by their composition  [5,6]

1/

053......containing rare earth metals  [5,6]

1/

055.......and magnetic transition metals, e.g. SmCo5  [6]

1/

057........and IIIa elements, e.g. Nd2Fe14B  [6]

1/

058........and IVa elements, e.g. Gd2Fe14C  [6]

1/

059........and Va elements, e.g. Sm2Fe17N2  [6]

1/

06.....in the form of particles, e.g. powder (H01F 1/047 takes precedence)  [5,6]

1/

08......pressed, sintered, or bound together  [6]

1/

09....mixtures of metallic and non-metallic particles; metallic particles having oxide skin  [6]

1/

10....non-metallic substances, e.g. ferrites  [6]

1/

11.....in the form of particles  [6]

1/

113......in a bonding agent  [6]

1/

117.......Flexible bodies  [6]

1/

12...of soft-magnetic materials  [6]

1/

14....metals or alloys  [6]

1/

147.....Alloys characterised by their composition  [5,6]

1/

153......Amorphous metallic alloys, e.g. glassy metals  [5,6]

1/

16.....in the form of sheets (H01F 1/147 takes precedence)  [5,6]

1/

18......with insulating coating  [6]

1/

20.....in the form of particles, e.g. powder (H01F 1/147 takes precedence)  [5,6]

1/

22......pressed, sintered, or bound together  [6]

1/

24.......the particles being insulated  [6]

1/

26........by macromolecular organic substances  [6]

1/

28......dispersed or suspended in a bonding agent  [6]

1/

33....mixtures of metallic and non-metallic particles; metallic particles having oxide skin  [6]

1/

34....non-metallic substances, e.g. ferrites  [6]

1/

36.....in the form of particles  [6]

1/

37......in a bonding agent  [6]

1/

375.......Flexible bodies  [6]

1/

38.....amorphous, e.g. amorphous oxides  [6]

1/

40..of magnetic semiconductor materials, e.g. CdCr2S4 (devices using galvano-magnetic or similar effects H01L 43/00)  [6]

1/

42.of organic or organo-metallic materials (H01F 1/44 takes precedence)  [6]

1/

44.of magnetic liquids, e.g. ferrofluids (particles in a bonding agent H01F 1/28, H01F 1/36)  [6]


3/

00Cores, yokes, or armatures (magnetic materials H01F 1/00; permanent magnets H01F 7/02)

3/

02.made from sheets

3/

04.made from strips or ribbons

3/

06.made from wires

3/

08.made from powder (powder coatings on sheets H01F 3/02, on strips or ribbons H01F 3/04, on wires H01F 3/06)

3/

10.Composite arrangements of magnetic circuits

3/

12..Magnetic shunt paths

3/

14..Constrictions; Gaps, e.g. air-gaps (in magnetic shunt paths H01F 3/12)


5/

00Coils (superconducting coils H01F 6/06; fixed inductances of the signal type H01F 17/00)

5/

02.wound on non-magnetic supports, e.g. formers

5/

04.Arrangements of electric connections to coils, e.g. leads

5/

06.Insulation of windings


6/

00Superconducting magnets; Superconducting coils  [6]

6/

02.Quenching; Protection arrangements during quenching  [6]

6/

04.Cooling  [6]

6/

06.Coils, e.g. winding, insulating, terminating or casing arrangements therefor  [6]


7/

00Magnets (superconducting magnets H01F 6/00; for separation of solid materials from solid materials or fluids B03C 1/00; for bench or like work-holders B23B 31/28, B23Q 3/00; work-holding devices B25B 11/00; lifting magnets B66C 1/00; for electric meters G01R; for relays H01H; for dynamo-electric machines H02K)

7/

02.Permanent magnets

7/

04..Means for releasing the attractive force

7/

06.Electromagnets; Actuators including electromagnets  [6]

7/

08..with armatures

7/

10...specially adapted for ac

7/

11....reducing or eliminating the effects of eddy currents  [6]

7/

12....having anti-chattering arrangements

7/

121...Guiding or setting position of armatures, e.g. retaining armatures in their end position  [6]

7/

122....by permanent magnet  [6]

7/

123....by ancillary coil  [6]

7/

124....by mechanical latch, e.g. detent  [6]

7/

126...Supporting or mounting  [6]

7/

127...Assembling  [6]

7/

128...Encapsulating, encasing or sealing  [6]

7/

129....of armatures  [6]

7/

13...characterised by pulling-force characteristic

7/

14...Pivoting armatures (H01F 7/17 takes precedence)  [6]

7/

16...Rectilinearly-movable armatures (H01F 7/17 takes precedence)  [6]

7/

17...Pivoting and rectilinearly-movable armatures  [6]

7/

18...Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings

7/

20..without armatures (cores H01F 3/00; coils H01F 5/00)

   H01F 10/00 - H01F 41/34  
 

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