Mono and multi-layer articles and infection molding methods of making the same
CA 2562073 C · Owner: Hutchinson, Gerald · Inventors: Farha, Said; Hutchinson, Gerald; Lee, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A preform comprising a neck portion and a body portion having a wall portion an end cap, the body portion comprising a first layer and a second layer the , second layer, the second layer comprising an expandable material; a preform comprising a threaded neck portion and a body portion including a wall portio: and an end cap, the body portion comprising expandable material adapted to produce foam when activated; methods of forming the preforms; the bottles manufactured and methods of injection moulding using multiple gates outlets, exhaust systems or mould cavities.
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 18, 2005 and granted July 8, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 18, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.