Patents Assigned to BGI Instruments, Inc.
  • Photometer device and method
    Patent number: 7256882
    Abstract: A photometer device including an inlet passage for receiving a fluid such as an aerosol at a specified flow rate, an outlet passage separated from the inlet passage by a gap, and a radiation passage across the gap. The flow rate and the significant dimension of the inlet passage are set to produce a laminar flow of the aerosol. The gap and the significant dimension of the outlet passage are set to maintain a laminar flow of the aerosol across the gap to prevent contamination of the radiation passage.
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: August 14, 2007
    Assignee: BGI Instruments, Inc.
    Inventors: Robert A. Gussman, Kevin E. DeVoe