Patents Examined by Martz Williams
  • Door knob sanitizing device
    Patent number: 6298521
    Abstract: A housing containing a sublimable disinfectant with the housing having an adhesive on the rear end for securing the housing to the backing plate behind a door knob. The housing has circumferential slots in the front end thereof so that the sublimed disinfectant vapors may reach the door knob. The housing is split in half so that it can be fit around the door knob shaft behind the knob.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: October 9, 2001
    Inventor: Gary Butterfield