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Expired Canadian patentCanada

Bulk loader for conveying articles

CA 2458324 C · Owner: Stoner, Michael K. · Inventors: Stoner, Michael K.; Eldridge, Joseph L.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A bulk loader conveys articles in bulk and has a hopper configured for receiving the articles such as railroad articles. A reciprocating member is configured for reciprocating between a retracted position and an extended position in a track associated with the hopper. Articles that are loaded into the hopper fall into the track when the reciprocating member is in the retracted position and are conveyed from the hopper when the reciprocating member actuates to the extended position resulting in the removed articles being positioned in a convenient location for further handling by an operator.

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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 23, 2004 and granted February 14, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 23, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 23, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 23, 2004
GrantedFebruary 14, 2012
Term endedFebruary 23, 2024
Patent numberCA 2458324 C
Classification (IPC)E01B29/26 +1 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedFeb 23, 2004Patent grantedFeb 14, 2012Term endedFeb 23, 2024

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.