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Expired Canadian patentCanada

Abrasive material

CA 1065616 A · Owner: Vsesojuzny Nauchno-Issledovatelsky I Konstruktorsko-Tekhnologichesky Ins Titut Prirodnykh Almazov I Instrumenta · Inventors: Kabanov, Alexandr V.; Senchakov, Anatoly I.; Andropov, Jury I.

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 abrasive material the grains of which have at least a three-component coating comprising silicon at least one, element of the group which consists of copper silver, gold, aluminium and transition metals of the 4th-8th groups of the periodic system, and an element chosen from the group which consists of gallium, indium, thallium germanium, tin, lead phophorus, antimony tellurium and sulphur.

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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 November 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 6, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedNovember 6, 1979
Term endedNovember 6, 1996
Patent numberCA 1065616 A
Classification (IPC)B24D3/06

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedNov 6, 1979Term endedNov 6, 1996

Sources & verification

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