Weigl, Bernhard H et al. ?United States Patent: 6454945 - Microfabricated Devices And Methods?. 2002. Web.

Weigl, Bernhard, Paul  Yager, and James P Brody. ?United States Patent: 6159739 - Device And Method For 3-Dimensional Alignment Of Particles In Microfabricated Flow Channels?. 2000. Web.

Weigl, Bernhard H et al. ?United States Patent: 5972710 - Microfabricated Diffusion-Based Chemical Sensor?. 1999. Web.

Yager, Paul et al. ?United States Patent: 5716852 - Microfabricated Diffusion-Based Chemical Sensor?. 1998. Web.