Induction foil cap sealer
CA 2221048 C · Owner: Sarles, William · Inventors: Herzog, Kenneth J.; Sarles, William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An sealing system includes a frame, a ferrite core disposed within the frame, and a litz wire coil disposed proximate to the ferrite core for producing an electromagnetic field within the ferrite core where the, ferrite core and litz wire coil are adapted to direct the electromagnetic field toward a foil to seal an opening of a container with the foil. The sealing head is air cooled within the induction sealing unit.
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 November 14, 1997 and granted July 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 14, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 2019.
- 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.