Of the 46 461 patents studied for the period 1970-2006 from the INIS Database, inputs (in percentages) were from Japan (27.9), the USA (23), Germany (13.7), France (11.3) and the UK (7.2). The main languages used were English (35.7), Japanese (27.9), German (14) and French (11.4), out of 20 languages. Patents with percentages in a single category were Engineering and Technology (62.4); Chemistry, Materials and Earth Sciences (13.9); Isotopes and Isotope and Radiation Applications (6.2); Physics (5.5); Life and Environmental Sciences (4.6); Other Aspects of Nuclear and Non-nuclear Energy (0.2); and multidisciplinary (7.2). Among the top inventors, Makoto Ueda had 140 patents, J. Schoening 121 and F.S. Jabsen 115.
Keywords: nuclear patents, patent records, patent database, International Nuclear Information System, INIS database