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| Number | Title | Issue Date |
| 7301460 | Packaging that can be checked for tampering The invention relates to packaging, e.g. an envelope or a parcel, that can be checked for tampering, which packaging includes a hermetically sealed body, the body being formed by folding a sheet of material that has been cut to a predefined shape. In order to track ... | 11/27/2007 |
| 7178713 | Easy open envelope The easy open envelope comprising a front panel and a back panel hingedly connected to one edge of the front panel; a sealing flap connected to the opposite edge of the front panel at a fold line and having on an outer side of the sealing flap in one corner section ... | 02/20/2007 |
| 6951301 | Combination closure and tear tape, packaging materials containing it, and method of using it to seal and later open packages A combination closure tape and tear strip, an object comprising the combination closure tape and tear strip, and a method of sealing and later opening said object utilizing the combination closure tape and tear strip are disclosed. ... | 10/04/2005 |
| 6588653 | Envelope pull opener An envelope pull opener includes a pair of pull tabs and a tearing filament. A single pull tab is attached to each end of the tearing filament. A peel-off adhesive surface is applied to one side of the pull tab. Preferably, the other side of the pull tab ... | 07/08/2003 |
| 6457638 | Envelope pull opener An envelope pull opener includes a pair of pull tabs and a tearing filament. A single pull tab is attached to each end of the tearing filament. A peel-off adhesive surface is applied to one side of the pull tab. Preferably, the other side of the pull tab ... | 10/01/2002 |
| 6123256 | Envelope construction An improved envelope construction comprises in general an envelope unit, a sealing unit, and a tear strip unit. The envelope unit comprises an envelope body member having a flap portion with a central segment provided with the sealing unit and two general... | 09/26/2000 |
| 5984170 | Tear string envelope A tear string envelope with the envelope made of an integral blank of sheet material and formed such that the front and rear portion of the envelope is interconnected by side flaps folded inwardly so that side edges and a lower and an upper folding edge a... | 11/16/1999 |
| 5961436 | Envelope with opening device An envelope formed from a single sheet of paper includes a front portion, a top flap, two lateral side flaps, a bottom flap, a top folding edge, two lateral side folding edges, and a bottom folding edge, the lateral side flaps overlapping and adhering to ... | 10/05/1999 |
| 5893514 | Blank for a container, and a container having a closing and opening system A blank for a container and the container afford a structure wherein the adhesive closure for the container also forms a tear strip to allow easy opening of the envelope once it is sealed.... | 04/13/1999 |
| 5799865 | Flap closure and opening means for envelopes The present invention relates to a paperboard envelope which utilizes a single strip of tear tape having adhesive applied to both sides for sealing and opening. The envelope structure includes starter elements in both the sealing flap and the panel to whi... | 09/01/1998 |
| 5732877 | Envelope with openable structure An envelope with openable structure includes a front panel, a back panel and a closure flap. The front panel has a front inner and a front outer opposed surface, a front top edge, a front bottom edge, and a front first and a front second opposed side edge... | 03/31/1998 |
| 5505376 | Envelopes A mailing envelope (10) has a stick down closure flap (11) extending from a fold line (12) along the top edge of a front panel (20). The closure flap (11) includes a graspable tear-out tab (19) to which is adhered a flexible line member (18) which extends... | 04/09/1996 |
| 5277361 | Reusable mailing envelope A reusable mailing envelope including: a panel including a front panel, a seal flap, a rear panel opposite the seal flap and first and second side panels, connected to the body section by fold lines; and reusable structure for allowing the envelope to be ... | 01/11/1994 |
| 5197663 | Reusable mailing envelope A reusable mailing envelope including: a panel including a front panel, a seal flap, a rear panel opposite the seal flap and first and second side panels, connected to the body section by fold lines; and reusable structure for allowing the envelope to be ... | 03/30/1993 |
| 4795035 | Tear strip opening device A device for opening an envelope which comprises a thread adhesively attached to the inside surface of the envelope, and non-tearable strips disposed on opposite sides of the thread and adhesively attached to the outside surface of the envelope, the threa... | 01/03/1989 |
| 4044942 | Multiple mailing folder An advertising multiple use mailing folder or mailer including an envelope which may be twice used in furthering the completion of a business transaction.... | 08/30/1977 |
