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Expired Canadian patentCanada

Gas spring assembly with pre-paint protective sleeve

CA 2535708 C · Owner: Ahmed, Sardar Imtiaz · Inventors: Jolley, Alan; Ahmed, Sardar Imtiaz

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 gas spring assembly includes a gas spring (10) enclosed within a flexible liquid-impermeable protective sleeve (24). The sleeve protects the gas spring against contamination during painting and pre-paint processes and is then , removable to leave the gas spring as a permanent component of the installation subject to the painting.

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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 12, 2004 and granted February 24, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 12, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 12, 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.
FiledAugust 12, 2004
GrantedFebruary 24, 2015
Term endedAugust 12, 2024
Patent numberCA 2535708 C
Classification (IPC)F16F9/38 +1 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedAug 12, 2004Patent grantedFeb 24, 2015Term endedAug 12, 2024

Sources & verification

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