Patents by Inventor Donna M. Steffens

Donna M. Steffens 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: 5167608
    Abstract: A flexible plate member is arranged for adherence to a bag member, wherein the plate member includes an adhesive strip mounted to a bottom surface thereof, and the plate member including interlocking zipper webs securable selectively by a zipper slidably mounted in intercommunication between the first and second webs, wherein the zipper member includes a severing plunger rod reciprocatably mounted within the zipper orthogonally oriented relative to the plate member to effect initial severing of an associated bag web subsequent to the plate member adhered to the bag web outer surface.
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: December 1, 1992
    Inventors: Leonard Steffens, Jr., Donna M. Steffens