Figure 3. Comparison between the accumulated deposits of patents in Brazil (BR), United States (US) and in participating countries of the European Patent Convention (EPC), from 1997 to 2017, by the Questel Orbit© software, in reference to family A61K31/00. (A) Search not adding keywords. (B) Search adding the keywords “radiographic contrast agent” OR “radiocontrast agents” OR “contrast imaging” OR “diagnostic imaging”.
