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Expired Canadian patentCanada

Separation and analysis of particle coatings

CA 1082488 A · Owner: Macourt, Dennis J. C. · Inventors: Macourt, Dennis J. C.

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 method of separating chemical coatings from particles is disclosed which may be used in the aerial prospecting for minerals or the determination of the chemical constituents of a dried liquid coating. The coating is volatized and ionised by passing the particle and its coating into a plasma. Separation is achieved by passing the particle through and beyond the plasma. The coating constituents may be spectroscopically analysed by passing the coating constituents directly into a second plasma and viewing the light emitted therefrom.

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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

  • Granted July 29, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 29, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 19, 1976
GrantedJuly 29, 1980
Term endedJuly 29, 1997
Patent numberCA 1082488 A
Classification (IPC)G01J3/00 +2 more

Timeline

Timeline From CIPO dates

1977198019831986198919921995Application filedNov 19, 1976Patent grantedJuly 29, 1980Term endedJuly 29, 1997

Sources & verification

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