Molding composite objects
CA 2432481 C · Owner: Gustine, Gary · Inventors: Sawyer, Michael; Gustine, Gary
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods for molding a surround over a liner to form a composite shell are provided. The liner is placed in a mold and molten surround material is injected into the mold so as to surround the liner. A surface of a protrusion of the liner abuts the mold so that the surface is exposed and is substantially flush with an exterior surface of the surround after the composite shell is removed from the mold. Molten surround material flows into a slot in a perimeter of the protrusion so that when the surround material solidifies a rib of surround material extends into the slot to form a pressure seal between the liner and the surround. An adhesive is applied to the liner before placing the liner in …
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 June 17, 2003 and granted January 4, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 2025.
- 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.