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Expired Canadian patentCanada

Coated substrate

CA 1249955 A · Owner: Rohm And Haas Company · Inventors: Rounds, Nicholas A.

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

i -, PATENT APPLICATION OF, NICHOLAS A. ROUNDS for, COATED SUBSTRATE, Docket No. 84-007 JJD: rmh Abstract of the Disclosure, A polymer coated information storage device such as, a disc, 18 disclosed. A coating composition for preparing such polymeric coating comprises certain esters of betaacryloxypropionic acid with certain diacrylates. The coating composition also comprises under certain circumstances, a photoinitiator. Express Mail No. B02062654

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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 February 14, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 14, 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.
FiledOctober 31, 1984
GrantedFebruary 14, 1989
Term endedFebruary 14, 2006
Patent numberCA 1249955 A
Classification (IPC)G11B7/24 +2 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedOct 31, 1984Patent grantedFeb 14, 1989Term endedFeb 14, 2006

Sources & verification

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