He was never found , its hard to try a prisoner you dont have.

Nobody has ever made an attempt find him or launched an investigation to find
out his whereabouts at the first place.
Dare to compare this with the efforts to catch very low key Nazi criminals like
simple concentration camp guards.
Even his name appeared only once in allied documents.

As they did in all countries, Urenco a joint Dutch, German and UK firm
only perfected the technology in the 1960's

Prior to that everyone used a combination of diffusion and
cyclotron technologies

Almost all German centrifuge experts together with the most of intact equipment
of Skoda,Degussa and Auer companies were transferred to soviet union,thats the
reason why Soviet Union became suddenly world leader in centrifuge technology
after WWII,while centrifuge development elsewhere stalled.
In western world serious centrifuge develepment started to accelerate only in
mid mid to late fifties when Germans started to leave Soviet Union with their
wealth of experience.