and improved. A vast amount of linguistic resources from the various native languages already under development, as well as from the UNL expression, has been accumulated in the last few years. Moreover, the technical infrastructure for expanding these resources is already in place, thus facilitating the participation of many more languages in the UNL system from now on. A growing number of scientific papers and academic dissertations on the UNL are being published every year. The most visible accomplishment so far is the recognition by the Patent Co-operation Treaty (PCT) of the innovative character and industrial applicability of the UNL, which was obtained in May 2002 through the World Intellectual Property Organisation (WIPO). Acquiring the patents (US patents 6,704,700 and 7,107,206) for the UNL is a completely novel achievement within the United Nations. See also Semantic network Abstract semantic graph Semantic translation Semantic unification Abstract Meaning Representation External links UNLweb, the UNLweb portal UNDL Foundation where UNL development is coordinated. Online book on UNL UNL system description UNL Society UNL in Bangladesh UNL in Brazil UNL in Egypt UNL in France UNL in Germany UNL in India UNL in Italy UNL in Japan UNL in Jordan UNL in Latvia UNL in Russia, Russian⇔UNL⇔English converter UNL in Spain UNL in Thailand Knowledge representation languages Computational linguistics Machine translation Translation