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Expired Canadian patentCanada

Pneumatic driver tire for tracked vehicle

CA 2508902 C · Owner: The Goodyear Tire & Rubber Company · Inventors: Safreed, Carl Kenneth Jr.; Bonko, Mark Leonard; Peterson, Paul John

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

A pneumatic drive tire for tracked vehicles is provided having an outer tread surface divided into two zones. The first tread zone has a plurality of lugs and grooves the grooves may extend across the entire first zone creating soil discharge channels. The soil discharge channels preferably extend into the shoulder. The tire has a second tread zone with no lugs or grooves.

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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 May 31, 2005 and granted July 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 31, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 31, 2005
GrantedJuly 17, 2012
Term endedMay 31, 2025
Patent numberCA 2508902 C
Classification (IPC)B62D55/12 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedMay 31, 2005Patent grantedJuly 17, 2012Term endedMay 31, 2025

Sources & verification

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