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Expired Canadian patentCanada

Automated tanker unloading system

CA 2497741 C · Owner: Hynick, Andrew T. · Inventors: Hynick, Andrew T.

CIPO record

Overview

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

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Abstract From the Canadian patent

An automated tanker unloading system (10) has a plurality of electronically controlled valves (28) to control gas pressure within a tanker trailer (16) and to control the delivery of product. A plurality of electronic gas pressure transducers (40) sense internal gas pressure within individual hoppers (18) of the trailer and sense internal gas pressures within a hot hose (14) and a product hose (24) and convert the sensed gas pressure into an electronic signal. A plurality of pressure carrying pipes (42) transmit positive and negative pressures between the valves and the hoppers and the product hoses and the hot hose. A processor (44) is programmed to analyze electronically inputted …

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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 August 14, 2002 and granted January 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 14, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 14, 2024.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 14, 2002
GrantedJanuary 10, 2012
Term endedAugust 14, 2022
Patent numberCA 2497741 C
Classification (IPC)B67D7/08 +1 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedAug 14, 2002Patent grantedJan 10, 2012Term endedAug 14, 2022

Sources & verification

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