Patents by Inventor Daniel C. Casar

Daniel C. Casar 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).

  • Face masks having an elastic and polyolefin thermoplastic band attached thereto by heat and pressure
    Patent number: 6332465
    Abstract: A filtration face mask 10 that comprises a mask body 20 and a band 30. The mask body is adapted to cover the nose and mouth of a wearer and that comprises polyolefin containing fibers. The band 30 comprises an elastic constituent and a fibrous thermoplastic constituent. The fibrous thermoplastic constituent has a melting point of about 250° C. or less and is a polyolefin or a substituted polyolefin. The band is attached to the mask body by heat and pressure at securement points 23.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: December 25, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Jianxian Xue, Daniel C. Casar