(2)其中,Patent citations部分主要解释了专利引证的用途:包括Identification of leading-edge technological activity, Measurement of national citation performance, Technological mapping, Competitive intelligence, Linkages to science, Measure of foreign dependence六个部分。
Such comparative studies are performed on the basis of the presence of highly cited patents in the US patent
system using the top decile citations performance ratio (CPR). A patent is in the “decile” if it is among the most highly cited 10% of patents in a particular year and its category.