01/12/2010 (Agence Europe) - Search engine for clean energy patents. The European Patent Office (EPO) announced on Monday that it had created a free, easy-to-use online search tool which provides unrestricted access to all patent documents related to clean energy technologies (CETs) worldwide. The tool puts some 700,000 patent documents in the CET field at the public's fingertips. The new tool was launched alongside a patent-based study on the emergence and distribution of clean energy...