Evolution over time
These plots represent the average number of patent families and the average annual growth of patent families over a 5 years period for , starting from 1971.
This sankey diagram represents the evolution of clusters of CPC codes for the technology .
You can click on each CPC code to have its description.
The cluster analysis has been conducted in several overlapping periods. You can see the network maps for each period below the diagram.
These plots represent the average number of patent families and the average annual growth of patent families over a 5 years period for , starting from 1971.
