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Expired Canadian patentCanada

Mobile separation system for abrasive blasting material

CA 2086275 C · Owner: Lyras, Gus · Inventors: Lyras, Gus

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 process and apparatus for separation and recovery of used abrasive blasting material having intrained contaminate recovered from a work site. The intrained contaminates are removed by a self-contained multi-step separation process using magnetic vibratory and airwash separating apparatus including static neutralization interconnected by transfer apparatus and storage bins.

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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 December 24, 1992 and granted August 18, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 24, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 24, 2014.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 24, 1992
GrantedAugust 18, 1998
Term endedDecember 24, 2012
Patent numberCA 2086275 C
Classification (IPC)B24C9/00

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedDec 24, 1992Patent grantedAug 18, 1998Term endedDec 24, 2012

Sources & verification

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