Pulp slab stacker
CA 2071932 C · Owner: Slave Lake Pulp Corporation · Inventors: Dale, Alan Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of restacking pulp slabs from a slab press allows smaller stacks to be conveyed on to a bale press without reducing the production rate of the slab press. A first stack having a predetermined number of slabs is conveyed to a transfer station, a top slab from the first stack is clamped and raised and the first stack with the remaining slabs is conveyed on for further pressing and packaging, a second stack of slabs is conveyed to the transfer station, the top slab from the first stack is lowered onto the second stack and then the top slab from the first stack and the top slab from the second stack are raised together, the second stack with the remaining slabs are conveyed on for …
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 July 22, 1992 and granted August 16, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 22, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 22, 2014.
- 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.