Patents by Inventor Bach Dang Duc

Bach Dang Duc has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Replacement lens cartridge
    Patent number: 8873170
    Abstract: Embodiments relate generally to a replaceable lens cartridge for use with a face mask, for example a respirator. The cartridge comprises a plurality of molded lenses, each lens sized to extend over one or more eyes of a wearer and typically having a curved shape and a plurality of catches; and a molded carrier mounting the lenses in stacked arrangement, the carrier having a first set of catches receiving the catches on one of the lenses.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: October 28, 2014
    Assignee: Honeywell International Inc.
    Inventors: Swapnil Gopal Patil, Joseph Rodrigues, Joseph Venagro, Felix Gauthier, Marc LaMontagne, Bach Dang Duc