During the PhD he spent a year in Freiburg/Switzerland with Olof Gigon and Joseph Maria Bocheński.
In 1947/48 he attended courses by Alfred Ayer and Stuart Hampshire, at University College London.
After admission to the PhD Nuchelmans taught for fourteen years Latin and Greek in Velsen.
In this occasion a volume of essays (Logos and Pragma) was dedicated to him to celebrate his scholarly achievements.
Nuchelmans had since 1975 been a member of the Koninklijke Nederlandse Akademie van Wetenschappen.