I have yes, for the purpose of biometric identification.
I used HTM to learn the behavioral sequences of ~40 different human controllers playing a simple computer game.
The idea was to use these 40 models to to identify who was playing, based on only the raw control behaviors streaming in.
But more than that I’d recommend checking out NAB if you haven’t yet.
Numenta created an anomaly detection benchmark using ~60 data sets with labeled anomalies, then ran HTM along with a few other algorithms and evaluated them based on the known true anomalies. It showed that HTM could work robustly across different data from different domains and different levels of noise, matching or besting all competitors.
I think most of what’s needed is awareness.
HTM is structured differently than the better known ML algorithms like LSTM, which enables it to excel at online learning from data streams and without hyper parameter optimization.
I suspect that once more practitioners find out about it, many will try it out for temporal anomaly detection where it’s known to shine.