Patents by Inventor Helmut Mattle

Helmut Mattle 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: 4988332
    Abstract: A method for the production of packing bags which can be stacked on a wicket and unfolded while being filled, and for that purpose are provided at the bottom end of the bag with exposed wicket perforations disposed in a wicket tab. The bag is made from an outspread web which first is assembled to an open-sided tube and then into a flat-folded tube and bonded. The outspread web is severed in the area of the bag-length boundaries which set the bag lengths apart from one another, by means of a cut made transversely of the web, which produces a castellated outline. The bottom area and top area of two bag lengths lie adjacent one another and yield interfitting tabs and notches. The tabs in the top area can be laid one on the other to form a handle section and at least one tab in the bottom area is used as a wicket tab. Unneeded web material between the tabs is cut away.
    Type: Grant
    Filed: May 4, 1989
    Date of Patent: January 29, 1991
    Assignee: M u. W Verpackungen Mildenberger u. Willing GmbH & Co. KG
    Inventor: Helmut Mattle
  • Patent number: 4988213
    Abstract: A packing bag (1), which is open-ended for filling purposes, is made from a film tube and has a removable film tab (10) at its open end (4). The tab is connected to the flat side (5) of the bag by a weld seam. The tab is provided with two wicket perforations (6, 7) and has an additional score line (12) between the wicket perforations and weld seam (9).
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: January 29, 1991
    Assignee: M & W Verpackungen Mildenberger & Willing GmbH & Co.
    Inventor: Helmut Mattle