Radio frequency method of sealing an article
CA 1299525 C · Owner: Munsch, John M. · Inventors: Schnell, William J.; Flagler, Robert W.; Fabisiewicz, Eugene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of radio frequency sealing attaches a seal member (30) to a cylindrical, hollow access, port (20) of a container. The method uses two sets of spaced apart die elements (12a,b and 14a,b) to generate an axial electric field along a region where the port and seal member overlap. An external peripheral ring (42) is formed about an exterior surface of the port. The method can be used with containers having a sealed periphery as well as those previously filled with a fluid.
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 April 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 28, 2009.
- 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.