Antinesting preforms for blow-molded articles
CA 2041323 C · Owner: Bombace, John · Inventors: Bombace, John; Pinto, Henry M.; Labarre, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tubular preform for a blow-molded, container. The preform has a closed end and an opposite open end, the relative dimensions of the ends being such that the closed end would be receivable in the open end of a similar preform to nest there were it not for the provision of an antinesting feature in the form of a plurality of axially extending ribs which protrude inwardly from the inner surface of the preform adjacent to the open end to prevent entry of another preform.
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 26, 1991 and granted January 9, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 26, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 26, 2013.
- 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.