PRIME: A System for Multi-lingual Patent Retrieval
  Given the growing number of patents filed in multiple countries, users are interested in retrieving patents across languages. We propose a multi-lingual patent retrieval system, which translates a user query into the target language, searches a multilingual database for patents relevant to the query, and improves the browsing efficiency by way of machine translation and clustering. Our system also extracts new translations from patent families consisting of comparable patents, to enhance the translation dictionary. 
Shigeto Higuchi, Masatoshi Fukui, Atsushi Fujii and Tetsuya Ishikawa