WPINDEX

 

Description
The Derwent World Patent Index provides information on patent publications from the 40 most important patent issuing authorities in the world. More information can be found at http://www.derwent.com.

 

 

Availability
Derwent provides search services, visit http://www.derwent.com for more information.
This database is also available in STN, STN Easy, various products from the Dialog Corporation and in Questel-Orbit.

 

 

Number of entries: keywords = heat pump (Sept. 99)
Over 9.5 million records (10/99); 8,257 entries with keywords = heat pump.

 

 

Description of heat pump entries

• Application area: residential, industrial (low percentages)

• Heat sources: waste heat utilisation dominates, but low percentage

• Technology specification: all, except vapour recompression; plenty on absorption. Worth checking for emerging technologies

• Type of project: no focus on pilot or demonstration projects

Assessment
This is a patent database, so it focuses more on technology rather than applications. Worth checking for emerging technologies.

 

 

Last updated: 1 March 2004

The world's leading information centre on heat pumps