Assessment of thermal-stable polymer nanocomposite techniques by patent citation network analysis... The systematic method provided in this paper is integration of basic patent statistics, technology-function classification, standard industrial classification, patent citation and network properties calculation...
Coverage: • 80 patenting authorities.... Content: • Patent family table plus bibliographic data for basic patent in summary data, and, where available, abstracts, cited references and legal status actions for each patent document in detailed data...
Protecting early innovators: should second-generation products be patentable?... Assuming that such products infringe the basic patent and that there is not much delay between the innovations, I argue that (i) patents on second-generation products are not necessary to encourage their development and (ii) the patentholder of the basic technology collects a larger share of the profit if applications or other second generation products are not patentable...
Patent equivalents: problems of retrieval and patent family tracing in databases... Three basic patent families are used as the bases of the experiment and the results of the retrieval requests in all the above databases are discussed in detail...
