Hans van Leunen is a retired physicist.
Hans is born in Helmond in the Netherlands at june 10 1941.
Hans took the Eindhoven HTS in chemistry from 1957-1960.
After his military service in 1060-1963, Hans started at the THE which is now called Technical University Eindoven (TUE) for a study in applied physics.
Hans finished this study in 1970 and then joined Philips Elcoma EOD in the development of image intensifier tubes. Later this became a department of Philips Medical Systems division.
In 1987 Hans switched to an internal software house. In 1995 Hans joined the Semiconductor division of Philips. In this period Hans designed a system for modular software generation.
In 2001 Hans retired.
From 1983 until 2006 Hans owned a software company "Technische en Wetenschappelijke Programmatuur" (TWP).
A private website treats my current activities. 
I store my papers at an e-print archive.
To investigate the foundations and the lower levels of physical reality Hans started in 2009 a personal research project that in 2011 got its current name,"The Hilbert Book Model Project".
The Hilbert Book Model is a purely mathematical unorthodox and controversial model of the foundations and the lower levels of the structure of physical reality.
The Hilbert Book Model Project is discussed at 
- Website; http://www.e-physics.eu
- My e-print archive; http://vixra.org/author/j_a_j_van_leunen
- "Report of the Hilbert Book Model Project"; http://vixra.org/abs/1612.0309
- ResearchGate; https://www.researchgate.net/project/The-Hilbert-Book-Model-Project