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Expired Canadian patentCanada

Replicating process for interference patterns

CA 1333378 C · Owner: Scott Paper Company · Inventors: Blenkhorn, Gary Paul

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Disclosed is a continuous process for replicating interference patterns in radiation curable coating compositions or materials. Radiation curable coatings are brought into contact with interference patterns borne on the surface of an endless belt or revolving drum. The curable coating which may be supported by a substrate or unsupported is irradiated to cure it at least sufficiently so that it can be stripped from the replicating surface.

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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 6, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 6, 2011.
  • 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 17, 1988
GrantedDecember 6, 1994
Term endedDecember 6, 2011
Patent numberCA 1333378 C
Classification (IPC)G03H1/04 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedMay 17, 1988Patent grantedDec 6, 1994Term endedDec 6, 2011

Sources & verification

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