On this page you will find a chronologically ordered overview of patents to whom I contributed.

8US 20120188538 A1
"Common detector for combined Raman spectroscopy-optical coherence tomography"
C. A. Patil, A. Mahadevan-Jansen, T. G. van Leeuwen, and J. Kalkman
7WO2009/109897 A1
"Photo acoustic sample detector with background compensation"
J. Kalkman and H. W. van Kesteren
6WO2009/001275 A1
"Device for analysing an inflammatory status of a respiratory system"
H. W. van Kesteren, T. J. Vink, N. P. Willard, J. Kalkman, and M. Saalmink
5WO2008/081374 A1, A2, A3
"Reflection or single scattering spectroscopy and imaging"
M. M. J. W. van Herpen, J. Kalkman, B. H. W. Hendriks, and S. Stallinga
4WO2008/056312 A1
"Oscillator element for photo acoustic detector"
H. W. van Kesteren, I. F. Helwegen, and J. Kalkman
3WO2008/026189 A1 and US2009/0249861 A1
"Stable photo acoustic trace gas detector with optical power enhancement cavity"
E. M. H. P. van Dijk and J. Kalkman
2WO2008/026183 A1
"Cavity-enhanced photo acoustic trace gas detector with improved feedback loop"
J. Kalkman, M. M. J. W. van Herpen, and H. W. van Kesteren
1WO2008/026146 A1
"Optical cavity-enhanced photoacoustic trace gas detector with variable light intensity modulator"
J. Kalkman and M. M. J. W. van Herpen