Reclosable container closure
CA 2093224 C · Owner: Roth, Donald J. · Inventors: Roth, Donald J.; Heyn, William M.; Sauer, Donald G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reclosable closure for containers of the type used for keeping or storing product for some time following initial opening of the container. Typical uses would be for snack foods such as candies peanuts, etc. and powdered products such as sugar cof-, fee, tea and other beverage mixes and the like. The closure also is adaptable for use with canned vegetables and meats and also with non-food products such as, for example nails, tacks and a myriad of , similar hardware items. The preferred closure includes an end panel (24) and ring-shaped frame member (22) which are fused or otherwise adhered together during insert-injection molding of the frame member. Means are provided on the frame …
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
- Filed September 27, 1991 and granted May 6, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 27, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 27, 2013.
- 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.