The “IPC Green Inventory” was developed by the IPC
Committee of Experts in order to facilitate searches for patent
information relating to so-called Environmentally Sound
Technologies (ESTs), as listed by the United Nations
Framework Convention on Climate Change (UNFCCC).
2. ESTs are currently scattered widely across the IPC in numerous
technical fields. The Inventory attemps to collect ESTs in one place,
although it should be noted that the Inventory does not purport to be
fully exhaustive in its coverage.
3. ESTs are presented in a hierarchical structure. Clicking on the
sign opens the hierarchy of the relevant technology. For each
technology, the links in the IPC column direct the user to the
corresponding place in the scheme.
4. It should be noted that each EST and its corresponding IPC place(s)
do not necessarily coincide and that the EST may represent a subset
of the corresponding IPC place.
5. The links in the PATENTSCOPE c