Closure
CA 1184152 A · Owner: Ethyl Molded Products Company · Inventors: Ostrowsky, Efrem M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A threaded thermoplastic closure (10) having a free-floating liner (15) is disclosed. To prevent backoff of the closure (10) from a container (C) studs, (20) are provided on the top wall (12) of the closure (10) which anchor the closure (10) to the liner (15) thus utilizing the resistance to rotation present between the liner (15) and the container lip (80).
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 March 19, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 19, 2002.
- 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.