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| Number | Title | Issue Date |
| 7659523 | Integrated assembly for delivery of air stream for optical analysis An integrated particle detection apparatus for optical detection of particles in an air stream. The particle detection apparatus includes a scalper for removing large particles from the air stream, a concentrator for separating out small particles and increasing the... | 02/09/2010 |
| 7390339 | Vortex separator in particle detection systems A particle separation apparatus is disclosed. The particle separation apparatus may be for sample air stream preparation and delivery in particle detection systems. The particle separation apparatus may include a first vortex separator coupled to a second vortex sep... | 06/24/2008 |
| 7355706 | Particle detection system implemented with an immersed optical system Fluid-based particle detection exhibits improved light collection and image quality from a light collection system that uses immersed optics on a flow-through cell for collecting and detecting scattered light from particles carried by the fluid. The flow-through cel... | 04/08/2008 |
| 7242009 | Methods and systems for signal processing in particle detection systems A method for statistically distinguishing between two or more populations, such as between samples containing background and threat particles, is disclosed. According to one embodiment, the method for statistically distinguishing is a method for processing a signal ... | 07/10/2007 |
| 7173257 | Integrated assembly for delivery of air stream for optical analysis An integrated particle detection apparatus for optical detection of particles in an air stream. The particle detection apparatus includes a scalper for removing large panicles from the air stream, a concentrator for separating out small particles and increasing the ... | 02/06/2007 |
| 7002682 | Method and apparatus for operating a laser in an extinction-type optical particle detector A light-extinction-type optical particle detection system comprises a laser producing a beam in response to a drive current amplitude reaching a lasing threshold, a view volume, and a light-extinction detector. The beam is characterized by mode-hopping noise energy ... | 02/21/2006 |
