Patents by Inventor Shannon L. Dowdell

Shannon L. Dowdell 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).

  • Patent number: 6520181
    Abstract: A face mask is disclosed that includes a mask portion, a resilient member (e.g., a pillowed web), and, optionally, an adhesive portion. The resilient member and the adhesive portion are alternately positionable between the mask portion and the wearer to inhibit the passage of vapor between the mask and the wearer, which prevents fogging of the wearer's eyewear. A method for using the face mask is also disclosed.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: February 18, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Nicholas R. Baumann, Shannon L. Dowdell, Matt T. Scholz, Wayne K. Dunshee
  • Publication number: 20020046754
    Abstract: A face mask is disclosed that includes a mask portion, a resilient member (e.g., a pillowed web), and, optionally, an adhesive portion. The resilient member and the adhesive portion are alternately positionable between the mask portion and the wearer to inhibit the passage of vapor between the mask and the wearer, which prevents fogging of the wearer's eyewear. A method for using the face mask is also disclosed.
    Type: Application
    Filed: December 12, 2001
    Publication date: April 25, 2002
    Applicant: 3M Innovative Properties Company
    Inventors: Nicholas R. Baumann, Shannon L. Dowdell, Matt T. Scholz, Wayne K. Dunshee
  • Patent number: 6354296
    Abstract: A face mask is disclosed that includes a mask portion, a resilient member (e.g., a pillowed web), and, optionally, an adhesive portion. The resilient member and the adhesive portion are alternately positionable between the mask portion and the wearer to inhibit the passage of vapor between the mask and the wearer, which prevents fogging of the wearer's eyewear. A method for using the face mask is also disclosed.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: March 12, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Nicholas R. Baumann, Shannon L. Dowdell, Matt T. Scholz, Wayne K. Dunshee
  • Patent number: 6026511
    Abstract: A shield that is configured for use with a mask to form a protective article. The mask includes (i) a central portion having a pair of opposed edges, (ii) a first portion joined to an edge of the central portion, and (iii) a second portion joined to the other edge of the central portion. At least one of the central, upper and lower portions is formed from filter media. The shield is flexible and transparent, having upper and lower edges, with the lower edge having at least one projection. It is dimensioned to cover the portion of the wearer's face not covered by the mask. The shield is adapted to be attached to the mask and moved between a first position in which the shield lower edge and the lower edge projection lies in front of the mask central portion, and a second position in which the lower edge projection engages the mask such that at least a portion of the shield lower edge lies behind the central portion.
    Type: Grant
    Filed: December 5, 1997
    Date of Patent: February 22, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Nicholas R. Baumann, Shannon L. Dowdell Browne, Michael P. Moulsoff, Jane K. Peterson, Nicole V. McCullough