Skip header and go to main content
About us
Jobs
Contact us
Classification Resources
Classification
Revision & Reclassification
CPC
Compilation of Changes
Consolidate Revision Concordance List (RCL)
List of Deleted Symbols
Notice of Changes
Notice of Editorial Corrections
Active CPC Revision Projects
CPC Revision Pre-releases
Published Revision Projects
IPC
Revision & Reclassification Project Status
USPC
Classification Orders
Locarno
Revision & Reclassification Project Status
General Training
CPC
CPC Training
Guide to CPC
IPC
Guide to IPC
Guidelines for revision and for use of the IPC
FAQ
Strasbourg Agreement
USPC
Examiner Handbook
Handbook of Classification
Locarno
About Locarno Classification
FAQ
Locarno Agreement
Additional Resources
CPC
CPC Scheme
IPC
IPC Scheme
USPC
Class Titles
Index to USPC
Locarno
Locarno Classification
Other
Espacenet Patent Search
JPO Classification system – File Index (FI) and F-terms
WIPO Standards on Industrial Property Information and Documentation
Contacts
Classification Standards and Development
Contacts
Lookup Symbol
Scheme
Definition
Concordance
search
Search
Search CPC
search
Search
Quick Links:
PDF
Scheme
Definition
CPC-to-IPC
Compilation of Changes
Recent Changes List
CPC to IPC Concordance for Subclass
C
21C
Printable Version [PDF]
Version:
2026.08
CPC Group
IPC Group
CPC Group
IPC Group
C
21C
1/00
C
21
C
1/00
open_in_new
C
21C
1/02
C
21
C
1/02
open_in_new
C
21C
1/025
C
21
C
1/02
open_in_new
C
21C
1/04
C
21
C
1/04
open_in_new
C
21C
1/06
C
21
C
1/06
open_in_new
C
21C
1/08
C
21
C
1/08
open_in_new
C
21C
1/10
C
21
C
1/10
open_in_new
C
21C
1/105
C
21
C
1/10
open_in_new
C
21C
3/00
C
21
C
3/00
open_in_new
C
21C
5/00
C
21
C
5/00
open_in_new
C
21C
5/005
C
21
C
5/00
open_in_new
C
21C
5/02
C
21
C
5/02
open_in_new
C
21C
5/04
C
21
C
5/04
open_in_new
C
21C
5/06
C
21
C
5/06
open_in_new
C
21C
5/28
C
21
C
5/28
open_in_new
C
21C
5/285
C
21
C
5/28
open_in_new
C
21C
5/30
C
21
C
5/30
open_in_new
C
21C
5/305
C
21
C
5/30
open_in_new
C
21C
5/32
C
21
C
5/32
open_in_new
C
21C
5/34
C
21
C
5/34
open_in_new
C
21C
5/35
C
21
C
5/35
open_in_new
C
21C
5/36
C
21
C
5/36
open_in_new
C
21C
2005/363
C
21
C
5/36
open_in_new
C
21C
2005/366
C
21
C
5/36
open_in_new
C
21C
5/38
C
21
C
5/38
open_in_new
C
21C
5/40
C
21
C
5/40
open_in_new
C
21C
5/42
C
21
C
5/42
open_in_new
C
21C
5/44
C
21
C
5/44
open_in_new
C
21C
5/441
C
21
C
5/44
open_in_new
C
21C
5/443
C
21
C
5/44
open_in_new
C
21C
5/445
C
21
C
5/44
open_in_new
C
21C
2005/446
C
21
C
5/44
open_in_new
C
21C
2005/448
C
21
C
5/44
open_in_new
C
21C
5/46
C
21
C
5/46
open_in_new
C
21C
5/4606
C
21
C
5/46
open_in_new
C
21C
5/4613
C
21
C
5/46
open_in_new
C
21C
5/462
C
21
C
5/46
open_in_new
C
21C
2005/4626
C
21
C
5/46
open_in_new
C
21C
5/4633
C
21
C
5/46
open_in_new
C
21C
5/464
C
21
C
5/46
open_in_new
C
21C
5/4646
C
21
C
5/46
open_in_new
C
21C
5/4653
C
21
C
5/46
open_in_new
C
21C
5/466
C
21
C
5/46
open_in_new
C
21C
2005/4666
C
21
C
5/46
open_in_new
C
21C
5/4673
C
21
C
5/46
open_in_new
C
21C
2005/468
C
21
C
5/46
open_in_new
C
21C
5/4686
C
21
C
5/46
open_in_new
C
21C
5/4693
C
21
C
5/46
open_in_new
C
21C
5/48
C
21
C
5/48
open_in_new
C
21C
5/50
C
21
C
5/50
open_in_new
C
21C
5/52
C
21
C
5/52
open_in_new
C
21C
5/5205
C
21
C
5/52
open_in_new
C
21C
5/5211
C
21
C
5/52
open_in_new
C
21C
5/5217
C
21
C
5/52
open_in_new
C
21C
2005/5223
C
21
C
5/52
open_in_new
C
21C
5/5229
C
21
C
5/52
open_in_new
C
21C
2005/5235
C
21
C
5/52
open_in_new
C
21C
5/5241
C
21
C
5/52
open_in_new
C
21C
5/5247
C
21
C
5/52
open_in_new
C
21C
5/5252
C
21
C
5/52
open_in_new
C
21C
2005/5258
C
21
C
5/52
open_in_new
C
21C
5/5264
C
21
C
5/52
open_in_new
C
21C
5/527
C
21
C
5/52
open_in_new
C
21C
2005/5276
C
21
C
5/52
open_in_new
C
21C
2005/5282
C
21
C
5/52
open_in_new
C
21C
2005/5288
C
21
C
5/52
open_in_new
C
21C
5/5294
C
21
C
5/52
open_in_new
C
21C
5/54
C
21
C
5/54
open_in_new
C
21C
5/56
C
21
C
5/56
open_in_new
C
21C
5/562
C
21
C
5/56
open_in_new
C
21C
5/565
C
21
C
5/56
open_in_new
C
21C
5/567
C
21
C
5/56
open_in_new
C
21C
7/00
C
21
C
7/00
open_in_new
C
21C
7/0006
C
21
C
7/00
open_in_new
C
21C
2007/0012
C
21
C
7/00
open_in_new
C
21C
2007/0018
C
21
C
7/00
open_in_new
C
21C
7/0025
C
21
C
7/00
open_in_new
C
21C
2007/0031
C
21
C
7/00
open_in_new
C
21C
7/0037
C
21
C
7/00
open_in_new
C
21C
7/0043
C
21
C
7/00
open_in_new
C
21C
7/005
C
21
C
7/00
open_in_new
C
21C
7/0056
C
21
C
7/00
open_in_new
C
21C
2007/0062
C
21
C
7/00
open_in_new
C
21C
7/0068
C
21
C
7/00
open_in_new
C
21C
7/0075
C
21
C
7/00
open_in_new
C
21C
7/0081
C
21
C
7/00
open_in_new
C
21C
7/0087
C
21
C
7/00
open_in_new
C
21C
2007/0093
C
21
C
7/00
open_in_new
C
21C
7/04
C
21
C
7/04
open_in_new
C
21C
7/06
C
21
C
7/06
open_in_new
C
21C
7/064
C
21
C
7/064
open_in_new
C
21C
7/0645
C
21
C
7/064
open_in_new
C
21C
7/068
C
21
C
7/068
open_in_new
C
21C
7/0685
C
21
C
7/068
open_in_new
C
21C
7/072
C
21
C
7/072
open_in_new
C
21C
7/076
C
21
C
7/076
open_in_new
C
21C
7/10
C
21
C
7/10
open_in_new
C
21C
2100/00
-
C
21C
2100/02
-
C
21C
2100/04
-
C
21C
2100/06
-
C
21C
2200/00
-
C
21C
2250/00
-
C
21C
2250/02
-
C
21C
2250/04
-
C
21C
2250/042
-
C
21C
2250/06
-
C
21C
2250/08
-
C
21C
2300/00
-
C
21C
2300/02
-
C
21C
2300/04
-
C
21C
2300/06
-
C
21C
2300/08
-
share
Share this page
print
Print this page
Additional information
about this page
Additional information about this page
Last updated on:
Friday July 31, 2026
Published on:
Friday July 31, 2026
Owned by:
Office of International Patent Cooperation