Considering that we still haven't exactly perfected U-238 technology in 70+ years, when exactly do you think we'll be able to separate and use things like Np-23

Considering that we still haven't exactly perfected U-238 technology in 70+ years, when exactly do you think we'll be able to separate and use things like Np-237 or Tc-99? Is there even anyone seriously working on that? There's a reason so many people are actively working on better containment technologies, and I don't think it's because they're dumber than a bunch of HN dilettantes.