DWPI database (files WPINDEX, WPIDS, WPIX) enhanced with Numerical Property Search facility

The Numerical Property Search facility in the Derwent World Patent Index (files WPINDEX, WPIDS and WPIX) on STN enables numerical searches to be performed for a specific set of physical property data having been identified within the English text fields.

Search field codes and related text for all physical properties available for numerical property searches have been indexed in the /PHP search field. Details on the newly available search fields and units are listed under HELP NPS.

For further particulars please refer to our Help Desk.