Tamper-proof closure for a container
CA 1094507 A · Owner: Owens-Illinois, Inc. · Inventors: Mueller, Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A container having a base a sidewall extending from, the periphery of the base and defining an open top and a, closure sealing the open top, is provided with a secondary closure. The secondary closure comprises a band of heat-shrinkable thermoplastic adhesive tape extending around the periphery of the container at the level of a seam formed by the closure and the sidewall such that the adhesive side faces the container. The tape is heat-shrunk into compressive engagement with the container and a portion of the tape is adhesively attached to the closure with another portion of the tape being adhesively attached to the sidewall. One end of the tape overlaps an opposite end of the tape and is …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 27, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 27, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.