Patent Yard Sign in
Expired Canadian patentCanada

Photopolymerisation by means of organometallic salts

CA 1300307 C · Owner: Irving, Edward · Inventors: Irving, Edward; Meier, Kurt; Johnson, Brian Frederick Gilbert

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

Case 3-13925/ARZ 324/+, PHOTOPOLYMERISATION BY MEANS OF ORGANOMETALLIC SALTS ABSTRACT, 1,2-Epoxides are polymerised or cured by exposure to actinic radiation in the presence of a salt of formula where, Y represents an arene or dienylium group Q represents an atom of certain d-block transition elements such as manganese and iron, a is a positive integer M represents an atom of a metal or metalloid n is 4, 5, or 6, X represents F or Cl, except that MXn- can also represent Sb(OH)F5. Typical such salts are ?-toluenetricarbonylmanganese hexafluorophosphate and tricarbonyl(l-methylcyclohexa-2,4dienylium)iron hexafluorophosphate.

Read the whole patent

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 May 5, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 5, 2009.
  • 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, 1983
GrantedMay 5, 1992
Term endedMay 5, 2009
Patent numberCA 1300307 C
Classification (IPC)C08G59/68 +2 more

Timeline

Timeline From CIPO dates

198419871990199319961999200220052008Application filedMay 17, 1983Patent grantedMay 5, 1992Term endedMay 5, 2009

Sources & verification

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