Patents by Inventor John Frank Thomas Stevenson

John Frank Thomas Stevenson 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: 5674545
    Abstract: An infusible package includes a closed bag, containing an infusible substance for infusion in a liquid. The bag is formed from panels of porous material sealed at their peripheral margins; and at least one string. Each string extends through a seal between the panels, enters the interior of the bag at a point on the peripheral margins and extends across the interior of the bag to an anchoring point at or adjacent the peripheral margins. The length of that portion of each string which extends across the interior of the bag between the point on the peripheral margins and the anchoring point is greater than the distance between that point and the anchoring point. With this arrangement, pulling the string initially causes withdrawal from the bag interior of slack string length disposed therein.
    Type: Grant
    Filed: January 20, 1995
    Date of Patent: October 7, 1997
    Assignee: Tidy Tea Limited
    Inventors: Anthony Evan Shakspeare, John Frank Thomas Stevenson