Patents Assigned to SFJC, LLC
  • Recreational smoking monitor system for use in occupied spaces
    Patent number: 9111426
    Abstract: A system detects presence of particles in the air of guest rooms of facilities such as motels and hotels for example that indicate that guests are engaged in recreational smoking. The system provides an indication to the facility manager of such behavior.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: August 18, 2015
    Assignee: SFJC, LLC
    Inventors: Christopher E. Engelmann, Kevin Nicholson, Quang (Tim) Nguyen, Kelvin A. Kosbab, Michael J. Masek, Jeffrey R. Frank