Hot runner nozzle with melt sealing
CA 2463402 C · Owner: Olaru, George · Inventors: Olaru, George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A modular hot runner nozzle having a variable length includes a first nozzle portion and a second nozzle portion provided in series between a manifold and a mold gate of an injection molding apparatus. The first nozzle portion and the second nozzle portion having respective nozzle channels for delivering the melt stream from the manifold to a mold cavity. A nozzle tip is provided at a forward end of the hot runner nozzle. The nozzle tip and the manifold are generally fixed within the injection molding apparatus so that axial thermal expansion is taken up by a telescoping or a slidable connection that is provided between the first nozzle portion and the second nozzle portion.
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 April 7, 2004 and granted January 15, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 7, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 7, 2026.
- 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.