
Concrete that closes its own cracks.
In 2010, researchers at Delft University of Technology patented a healing agent for concrete: mixed in when the concrete is poured, it lets small cracks close by themselves, so buildings and bridges last longer with less repair.
Since then, other inventors have built on it. 24 later patents by others cite it. These companies filed them:
The patent is still protected in 7 countries, for about four more years. This is what Patent Platform looks for: an invention that companies already build on. The question for the university is simple — who talks to those companies before the time runs out?
EP2556037 and its family. From public EPO data, 27 October 2026. Delft University of Technology is not a member of the cooperative; this is an example, not an offer.



