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classification-cpc | 52 | Cooperative Patent Classification. Format is according to WIPO ST. 8. For more information on CPC, see Cooperative Patent Classification in IFI CLAIMS Direct. The full list of CPC codes can be found on the CPC website or the USPTO website. When available, F and L symbols may indicate first and later classifications as in the following example:
The different elements of CPC codes are described in the following table:
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combination-sets | Group of CPC symbols that have one base class and one or more subsequent ranked symbols that are linked together to convey special classification information. C-Sets classification is a special classification technique, providing a mechanism for searching combined features that are otherwise not easy to find by single symbols, resulting in more precise and efficient retrieval of technical information from CPC. A C-Set brings together symbols from different groups within the same subclass or from different subclasses, in a certain order.
Example of C-sets presentation in patent documents and in the CPC database:
Source: Guide to CPC (EPO and USPTO) See https://www.cooperativepatentclassification.org/wcm/connect/cpc/661b9799-529f-43c5-bc90-aadfe8bafd15/CPC+Combination+Sets.pdf?MOD=AJPERES&CVID= for Training for more information. |
technical-data/classifications-cpc/combination-sets/combination-set
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