Inspec classification codes and controlled terms have been mapped to the relevant International Patent Classification (IPC) and Cooperative Patent Classification (CPC). As a result, IPC and CPC codes have been assigned to relevant records back to 1969.
This is a valuable tool for prior art searchers. It provides a method for the ready clustering of non-patent literature information that is relevant to patents, using familiar classification systems that and providing interoperability with other data sources.