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Location of IPC marks by section

Sub-Class Section Sub-Class Section Sub-Class Section Sub-Class Section
A01B MECH 1 A46B ELEC 1 B04B MECH 3 B27B MECH 2
A01C MECH 1 A46D ELEC 1 B04C MECH 3 B27C MECH 2
A01D MECH 1 A47B MECH 2 B05B MECH 3 B27D MECH 2
A01F MECH 1 A47C MECH 2 B05C MECH 3 B27F MECH 2
A01G MECH 1 A47D MECH 2 B05D MECH 3 B27G MECH 2
A01H CHEM 1 A47F MECH 2 B06B ELEC 1 B27H MECH 2
A01J MECH 1 A47G MECH 2 B07B MECH 3 B27J MECH 2
A01K CHEM 1, MECH 1, Note 1A47H MECH 2 B07C ELEC 1 B27K CHEM 4
A01L MECH 1 A47J MECH 2 B08B MECH 3 B27L MECH 2
A01M MECH 1 A47K MECH 2 B09B MECH 3 B27M MECH 2
A01N CHEM 4 A47L MECH 3 B09C MECH 3 B27N MECH 3
A01P CHEM 4 A61B MECH 4 B21B MECH 2 B28B MECH 3
A21B MECH 3 A61C MECH 4 B21C MECH 2 B28C MECH 3
A21C MECH 3 A61D MECH 4 B21D MECH 2 B28D MECH 3
A21D CHEM 4 A61F MECH 4 B21F MECH 2 B29B MECH 3
A22B MECH 3 A61G MECH 4 B21G MECH 2 B29C MECH 3
A22C MECH 3 A61H MECH 4 B21H MECH 2 B29D MECH 3
A23B CHEM 4 A61J MECH 4 B21J MECH 2    
A23C CHEM 4 A61K CHEM 3 B21K MECH 2    
A23D CHEM 4 A61L CHEM 4 B21L MECH 2    
A23F CHEM 4 A61M MECH 4 B22C MECH 3    
A23G CHEM 4 A61N MECH 4 B22D MECH 3 B29K MECH 3
A23J CHEM 4 A61P CHEM 3 B22F MECH 3 B29L MECH 3
A23K CHEM 4 A61Q CHEM 3 B23B MECH 2 B30B MECH 3
A23L CHEM 4 A62B MECH 1 B23C MECH 2 B31B MECH 3
A23N MECH 3 A62C MECH 1 B23D MECH 2 B31C MECH 3
A23P MECH 3 A62D CHEM 4 B23F MECH 2 B31D MECH 3
A24B CHEM 4 A63B ELEC 3 B23G MECH 2 B31F MECH 3
A24C CHEM 4 A63C ELEC 3 B23H MECH 2 B32B CHEM 4
A24D CHEM 4 A63D ELEC 3 B23K ELEC 1 B33Y MECH 3 Note 5
A24F MECH 3 A63F ELEC 1 B23P MECH 2 B41B ELEC 1
A41B ELEC 1 A63G ELEC 3 B23Q MECH 2 B41C ELEC 1
A41C ELEC 1 A63H ELEC 3 B24B MECH 2 B41D ELEC 1
A41D ELEC 1 A63J ELEC 3 B24C MECH 2 B41F ELEC 1
A41F ELEC 1 A63K ELEC 3 B24D MECH 2 B41G ELEC 1
A41G ELEC 1 A99Z Ind Arb B25B MECH 2 B41J ELEC 1
A41H ELEC 1 B01B MECH 3 B25C MECH 2 B41K ELEC 1
A42B ELEC 1 B01D MECH 3 B25D MECH 2 B41L ELEC 1
A42C ELEC 1 B01F MECH 3 B25F MECH 2 B41M ELEC 1
A43B ELEC 1 B01J MECH 3 B25G MECH 2 B41N ELEC 1
A43C ELEC 1     B25H MECH 2 B42B ELEC 1
A43D ELEC 1 B01L ELEC 1 B25J MECH 2 B42C ELEC 1
A44B ELEC 1 B02B MECH 3 B26B MECH 2 B42D ELEC 1
A44C ELEC 1 B02C MECH 3 B26D MECH 2 B42F ELEC 1
A45B ELEC 1 B03B MECH 3 B26F MECH 2 B43K ELEC 1
A45C ELEC 1 B03C MECH 3     B43L ELEC 1
A45D ELEC 1 B03D MECH 3     B43M ELEC 1
A45F ELEC 1            

 
Sub-Class Section Sub-Class Section Sub-Class Section Sub-Class Section
B44B ELEC 1 B65B MECH 1 C08C CHEM 4 C14B MECH 3
B44C ELEC 2 B65C MECH 1     C14C MECH 3
B44D ELEC 1 B65D MECH 1 C08F CHEM 4 C21B MECH 3
B44F ELEC 2 B65F MECH 1 C08G CHEM 4 C21C MECH 3
B60B MECH 1 B65G MECH 1 C08H CHEM 4 C21D MECH 3
B60C MECH 1 B65H MECH 1 C08J CHEM 4 C22B MECH 3
B60D MECH 1     C08K CHEM 4 C22C MECH 3
B60F MECH 1 B66B MECH 2 C08L CHEM 4    
B60G MECH 1 B66C MECH 2 C09B CHEM 2 C22F MECH 3
B60H ELEC 1 B66D MECH 2 C09C CHEM 4    
B60J MECH 1 B66F MECH 2 C09D CHEM 4 C23C MECH 3
B60K MECH 1 B67B MECH 1 C09F CHEM 4 C23D MECH 3
B60L ELEC 1 B67C MECH 1 C09G CHEM 4 C23F MECH 3
B60M ELEC 1 B67D MECH 1 C09H CHEM 4 C23G MECH 3
B60N MECH 1 B68B MECH 2 C09J CHEM 4 C25B MECH 3
B60P MECH 1 B68C MECH 2 C09K CHEM 4 C25C MECH 3
B60Q ELEC 1 B68F MECH 2 C10B MECH 3 C25D MECH 3
B60R MECH 1 B68G MECH 2 C10C MECH 3 C25F MECH 3
B60S MECH 1 B81B ELEC 1 C10F MECH 3 C30B MECH 3
B60T MECH 1 B81C ELEC 1 C10G MECH 3 C40B 10 CHEM 2
B60V MECH 1 B82B ELEC 1 C10H MECH 3 C40B 20 CHEM 1
B60W MECH 1 B82Y ELEC 1 C10J MECH 3 C40B 30 CHEM 4
B61B MECH 1 B99Z Ind Arb C10K MECH 3 C40B 40 CHEM 2
B61C MECH 1 C01B CHEM 4 C10L MECH 3 C40B 50 CHEM 4
B61D MECH 1 C01C CHEM 4 C10M MECH 3 C40B 60 ELEC 1
B61F MECH 1 C01D CHEM 4 C10N MECH 3 C40B 70 CHEM 2
B61G MECH 1 C01F CHEM 4 C11B CHEM 4 C40B 80 CHEM 2
B61H MECH 1 C01G CHEM 4 C11C CHEM 4 C40B 99 Ind Arb
B61J MECH 1 C02F MECH 3 C11D CHEM 4 C99Z Ind Arb
B61K MECH 1 C03B CHEM 4 C12C CHEM 4 D01B MECH 2
B61L ELEC 3 C03C CHEM 4 C12F CHEM 4 D01C MECH 3
B62B MECH 1 C04B CHEM 4 C12G CHEM 4 D01D MECH 2
B62C MECH 1 C05B CHEM 3 C12H CHEM 4 D01F MECH 3
B62D MECH 1 C05C CHEM 3 C12J CHEM 4 D01G MECH 2
B62H MECH 1 C05D CHEM 3 C12L CHEM 4 D01H MECH 2
B62J MECH 1 C05F CHEM 3 C12M MECH 4 D02G MECH 2
B62K MECH 1 C05G CHEM 3 C12N CHEM 1 D02H MECH 2
B62L MECH 1 C06B CHEM 2 C12P CHEM 4 D02J MECH 2
B62M MECH 1 C06C CHEM 2 C12Q CHEM 1 D03C MECH 2
B63B MECH 1 C06D CHEM 2 C12R CHEM 13D03D MECH 2
B63C MECH 1 C06F CHEM 2 C12S CHEM 1 D03J MECH 2
B63G MECH 1 C07B CHEM 2 C13B MECH 3 D04B MECH 2
B63H MECH 1 C07C CHEM 2     D04C MECH 2
B63J MECH 1 C07D CHEM 2     D04D MECH 2
B64B MECH 1 C07F CHEM 3     D04G MECH 2
B64C MECH 1 C07G CHEM 2     D04H MECH 2
B64D MECH 1 C07H CHEM 2     D05B MECH 2
B64F MECH 1 C07J CHEM 2 C13K MECH 3 D05C MECH 2
B64G MECH 1 C07K CHEM 3, CHEM 2, note 4        
    C08B CHEM 2        

 
Sub-Class Section Sub-Class Section Sub-Class Section Sub-Class Section
D06B MECH 2 E21D MECH 2 F21H ELEC 1 F42B MECH 1
D06C MECH 2 E21F MECH 2 F21K ELEC 1 F42C MECH 1
D06F MECH 3 F01B MECH 1 F21L ELEC 1 F42D MECH 1
D06G MECH 2 F01C MECH 1 F21M ELEC 1 F99Z ELEC 1
D06H MECH 2 F01D MECH 1 F21P ELEC 1 G01B ELEC 1
D06J MECH 2 F01K MECH 1 F21Q ELEC 1 G01C ELEC 1
D06L MECH 3 F01L MECH 1 F21S ELEC 1 G01D ELEC 1
D06M MECH 3 F01M MECH 1 F21V ELEC 1 G01F ELEC 1
D06N MECH 3 F01N MECH 1 F21W ELEC 1 G01G ELEC 1
D06P CHEM 2 F01P MECH 1 F21Y ELEC 1 G01H ELEC 1
D06Q MECH 3 F02B MECH 1 F22B MECH 3 G01J ELEC 1
D07B MECH 1 F02C MECH 1 F22D MECH 3 G01K ELEC 1
D21B MECH 3 F02D MECH 1 F22G MECH 3 G01L ELEC 1
D21C MECH 3 F02F MECH 1 F23B MECH 3 G01M ELEC 1
D21D MECH 3 F02G MECH 1 F23C MECH 3 G01N ELEC 1,  CHEM 1 Note 2
D21F MECH 3 F02K MECH 1 F23D MECH 3 G01P ELEC 1
D21G MECH 3 F02M MECH 1 F23G MECH 3 G01Q ELEC 1
D21H MECH 3 F02N MECH 1 F23H MECH 3 G01R ELEC 2
D21J MECH 3 F02P ELEC 1 F23J MECH 3 G01S ELEC 2
D99Z Ind Arb F03B MECH 1 F23K MECH 3 G01T ELEC 1
E01B MECH 2 F03C MECH 1 F23L MECH 3 G01V ELEC 1
E01C MECH 2 F03D MECH 1 F23M MECH 3 G01W ELEC 1
E01D MECH 2 F03G MECH 1 F23N MECH 3 G02B ELEC 1
E01F MECH 2 F03H MECH 1 F23Q MECH 3 G02C ELEC 1
    F04B MECH 1 F23R MECH 3 G02F ELEC 1
E01H MECH 2 F04C MECH 1 F24B MECH 3 G03B ELEC 1
E02B MECH 2 F04D MECH 1 F24C MECH 3 G03C CHEM 4
E02C MECH 2 F04F MECH 1 F24D MECH 3 G03D CHEM 4
E02D MECH 2 F15B MECH 1 F24F MECH 3 G03F CHEM 4
E02F MECH 2 F15C ELEC 3 F24H MECH 3 G03G ELEC 1
E03B MECH 2 F15D MECH 1 F24J MECH 3 G03H ELEC 1
E03C MECH 2 F16B MECH 1 F25B MECH 3 G04B ELEC 3
E03D MECH 2 F16C MECH 1 F25C MECH 3 G04C ELEC 3
E03F MECH 3 F16D MECH 1 F25D MECH 3 G04D ELEC 3
E04B MECH 2 F16F MECH 1 F25J MECH 3 G04F ELEC 3
E04C MECH 2 F16G MECH 1 F26B MECH 3 G04G ELEC 3
E04D MECH 2 F16H MECH 1 F27B MECH 3 G04R ELEC 3
E04F MECH 2 F16J MECH 1 F27D MECH 3 G05B ELEC 2
E04G MECH 2 F16K MECH 2 F28B MECH 3 G05D ELEC 2
E04H MECH 2 F16L MECH 2 F28C MECH 3 G05F ELEC 2
E05B MECH 2 F16M MECH 1 F28D MECH 3 G05G ELEC 2
E05C MECH 2 F16N MECH 1 F28F MECH 3 G06C ELEC 3
E05D MECH 2 F16P MECH 2 F28G MECH 3 G06D ELEC 3
E05F MECH 2 F16S MECH 2 F41A MECH 1 G06E ELEC 3
E05G MECH 2 F16T MECH 2 F41B MECH 1 G06F ELEC 3
E06B MECH 2 F17B MECH 2 F41C MECH 1 G06G ELEC 3
E06C MECH 2 F17C MECH 2 F41D MECH 1 G06J ELEC 3
E21B MECH 2 F17D MECH 2 F41F MECH 1 G06K ELEC 3
E21C MECH 2     F41G MECH 1 G06M ELEC 3
E99Z MECH 2     F41H MECH 1 G06N ELEC 3
        F41J MECH 1 G06Q ELEC 3
            G06T ELEC 3

 
Sub-Class Section Sub-Class Section Sub-Class Section Sub-Class Section
G07B ELEC 1 G11B ELEC 3 H01P ELEC 2 H03K ELEC 2
G07C ELEC 1 G11C ELEC 3 H01Q ELEC 2 H03L ELEC 2
G07D ELEC 1     H01R ELEC 2 H03M ELEC 2
G07F ELEC 1 G12B ELEC 1 H01S ELEC 1 H04B ELEC 2
G07G ELEC 1 G21B ELEC 1 H01T ELEC 2 H04H ELEC 2
G08B ELEC 1 G21C ELEC 1     H04J ELEC 2
G08C ELEC 2 G21D ELEC 1 H02B ELEC 2 H04K ELEC 2
G08G ELEC 1 G21F ELEC 1 H02G ELEC 2 H04L ELEC 2
G09B ELEC 2 G21G ELEC 1 H02H ELEC 2 H04M ELEC 2
G09C ELEC 2 G21H ELEC 1 H02J ELEC 2 H04N ELEC 2
G09D ELEC 2 G21J ELEC 1 H02K ELEC 2 H04Q ELEC 2
G09F ELEC 2 G21K ELEC 1 H02M ELEC 2 H04R ELEC 2
G09G ELEC 2 G99Z Ind Arb H02N ELEC 2 H04S ELEC 2
G10B ELEC 3 H01B ELEC 2 H02P ELEC 2 H04W ELEC 2
G10C ELEC 3 H01C ELEC 2 H02S ELEC 2 H05B ELEC 1
G10D ELEC 3 H01F ELEC 2 H03B ELEC 2 H05C ELEC 2
G10F ELEC 3 H01G ELEC 2 H03C ELEC 2 H05F ELEC 2
G10G ELEC 3 H01H ELEC 2 H03D ELEC 2 H05G ELEC 1
G10H ELEC 3 H01J ELEC 1 H03F ELEC 2 H05H ELEC 1
G10K ELEC 3 H01K ELEC 1 H03G ELEC 2 H05K ELEC 2
G10L ELEC 3 H01L ELEC 1 H03H ELEC 2 H99Z Ind Arb
    H01M MECH 3 H03J ELEC 2    

Notes

  1. A01K 67/- is handled by Section CHEM 1, the rest of A01K is handled by Section MECH 1.
  2. G01N 33/48 to 33/98 are handled by Section CHEM 1. The rest of G01N is handled by Section ELEC 1.
  3. C12R is an indexing scheme associated with classes C12C to Q and C12S 
  4. C07K 1/-, 16/-, 17/-, and 19/- are handled by CHEM 3, the rest of C07K is handled by CHEM 2
  5. Special conditions apply to B33Y. The classification symbols of this subclass are not to be listed as first marks when assigned to patent documents. The first mark must be in a non-B33Y area and a further mark(s) can be in B33Y.

Last Updated: 06/1/2016

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