Risorse per le ricerche di biotecnologia, chimica, biologia: Patenti e brevetti

Espacenet is a convenient and easy method of searching for European, United States, and Japanese patents. Many patents are full-text with diagrams.

.world-wide leading free patent search..." with terabytes of patent diagrams

The government's free, searchable database of United States patents, patent applications, and trademarks. It provides coverage of patent materials from 1790 to the present.

Provided by a specialized agency of the United Nations. See the Knowledge tab to access resources such as PATENTSCOPE database to access to "...international Patent Cooperation Treaty (PCT) applications in full text format on the day of publication, as well as to patent documents of participating national and regional patent offices."