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Expired Canadian patentCanada

Coated article and method of manufacturing the article

CA 1263928 C · Owner: Havener, Kenneth · Inventors: Havener, Kenneth; Register, Arnold; Flasck, James D.

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

Disclosed is a coated article having a substrate with an adherent, abrasion resistant carbon coating. In a preferred examplification the coating is substantially transparent to visible light and partially absorbing to ultraviolet light. The coating has a relatively disordered portion at the substrate coating interface and a relatively ordered portion remote from the substrate - coating interface. The coating is a microwave deposited coating with deposition initially at a low microwave energy and, thereafter at a high microwave energy.

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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 December 19, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 19, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 2, 1987
GrantedDecember 19, 1989
Term endedDecember 19, 2006
Patent numberCA 1263928 C
Classification (IPC)C23C16/50 +2 more

Timeline

Timeline From CIPO dates

1988199019921994199619982000200220042006Application filedSep 2, 1987Patent grantedDec 19, 1989Term endedDec 19, 2006

Sources & verification

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