Plastics bottles and similar containers
CA 2003113 C · Owner: Kelsey, Stephen Frederick · Inventors: Kelsey, Stephen Frederick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A blow moulded plastics bottle (10) or similar container has a neck (12) formed to receive a bottle closure a side wall (11), and a base (13), and includes an internal spider (16) attached to the side wall (11) and extending across the inside of the bottle (10). The material in the side wall (11) and spider (16) at least, of the bottle (10) is bi-axially oriented. The plastics bottle is preferably formed by initially injection moulding a preform and then by a stretch-blow moulding technique. The internal spider (16) may extend substantially the whole length of the bottle from its neck to its base or alternatively, the, internal spider (16) only extends over part of the length of the bottle …
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 16, 1989 and granted February 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 16, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 16, 2011.
- 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.