Catalog of expired patents (>20 years old, in the public domain) for technologies
with direct application to African agricultural, water, energy, and food systems challenges.
All patents listed have expired and are freely implementable without licensing fees.
The technical specifications described are in the public domain.
Water access (solar pumps, sand dams, treadle pumps)
Food storage… See the full description on the dataset page:
https://huggingface.co/datasets/gmahia/africa-expired-patents-pd.
