Eén van de medewerkers van Philips Research, ofwel Nat.Lab., zie hagenbeuk.nl/Philips-research
- 1979 Heat Pipe patent
- 1995 Direct bonding: From an optical technology to a broad research topic U.Biermann, A. v. Gorkum, B. Pals
- 1995 High aspect ratio resist structures by E-beam overexposure H. de Koning, P. Zandbergen, M. Verheijen, U. Biermann



