: 59 [2] The project was carried out at the Institute A in Sukhumi and was being overseen by German physicist, Manfred von Ardenne, and directed by another German scientist Max Steenbeck, whose theoretical achievements Zippe used to successful deployment in 1950.: 59 [2] In 1952, Zippe was transferred to Saint Petersburg to continue his work on the efficiency with the Russian scientists, which he stayed until 1954.: 60–61 [2] It was an standard practice by the captured German scientists to quarantine if they had work on the Soviet program of nuclear weapons, which Zippe did while being interned in transition camp in Kyiv.

: 64 In 1956, Zippe was notified by the Soviet administration in Ukraine of his release, and he decided to settle in Germany as opposed to Austria.

: 65  In 1965, Zippe left AMOLF to join the Duggas AG (now Trade name: Evonik Industries) as a consultant until 1969 when he decided to join the consultant staff of the Urenco Group until his retirement in 1990.: 65 It was the Dutch physicist Jacob Kistemaker [nl] who filed and applied for the first patent in the European and U.S. patents authorities as a functional gas-ultracentrifuge developed at AMOLF, which he credited after Zippe: Zippe-type.

[4] In 1960, Zippe traveled to the United States on the sponsorship of the University of Virginia, facilitated by Jesse Beams, where he did an unclassified postdoctoral research on the centrifuge technology.

[7] When asked if he has any regrets, he responded, "With a kitchen knife you can peel a potato or kill your neighbor, it's up to governments to use the centrifuge for the benefit of mankind.