Freight car for bulk material
CA 2036019 C · Owner: Oellerer, Friedrich · Inventors: Oellerer, Friedrich; Theurer, Josef
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A freight car for incorporation into a freight train of a series of successively arranged like freight cars comprises a carrier frame, a box for storing bulk material the box having, a bottom affixed to the carrier frame and an open top two, longitudinally extending bulk material conveyor arrangements arranged independent of each other, at least one of the conveyor arrangements extending partly along the bottom of the box, and each conveyor arrangement having opposite ends longitudinally spaced from each other and one of the conveyor arrangement ends being higher than the opposite conveyor arrangement end whereby the conveyor arrangement ends at facing ends of the successive freight cars …
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 February 8, 1991 and granted August 22, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 8, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 8, 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.