Patents Assigned to Quality Air Systems, Inc.
  • Modular wall apparatus and method for its use
    Patent number: 5322473
    Abstract: A smoker's booth for isolating, containing, venting, and filtering tobacco smoke. The booth has a walled enclosure with a modular room divider system using hollow walls, filtration, and blower devices to remove tobacco smoke from workplace air.
    Type: Grant
    Filed: October 2, 1992
    Date of Patent: June 21, 1994
    Assignee: Quality Air Systems, Inc.
    Inventors: Joseph S. Hofstra, Ronald J. Karaskiewicz, Mark R. Fischer
  • Smoker's booth
    Patent number: 5181883
    Abstract: A smoker's booth for isolating, containing, venting, and filtering tobacco smoke. The booth has a walled enclosure with a smoker's access aperture. The presence of a smoker is detected, thereby activating the venting, filtering, and lighting mechanisms. The booth can be wall mounted or freestanding.
    Type: Grant
    Filed: November 8, 1991
    Date of Patent: January 26, 1993
    Assignee: Quality Air Systems, Inc.
    Inventors: Joseph S. Hofstra, Ronald J. Karaskiewicz, Mark R. Fischer