Bulk container
CA 2077076 C · Owner: Shuert, Lyle H. · Inventors: Shuert, Lyle H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A container (10) for bulk materials includes a cardboard tubular sleeve assembly (17) having its lower edge portion in upwardly opening groove (40) on a plastic pallet (14). The tubular sleeve assembly (17) comprises inner (70) and outer (71) tubular sleeves respectively formed of first and second corrugated cardboard structures with the inner sleeve (70) positioned telescopically within the outer sleeve (72) and with the outer annular surface of the inner sleeve secured to the inner annular surface of the outer sleeve to form a composite sleeve assembly having a thickness approximately the width of the groove (40) on the pallet (14). An auxiliary cardboard sheet (78, 80) is secured to the …
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 March 5, 1991 and granted October 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 5, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 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.