Radiation sensitive compounds
CA 1338871 C · Owner: Etherington, Terence · Inventors: Etherington, Terence; Kolodziejczyk, Victor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A radiation sensitive material suitable for the production of radiation sensitive plates for lithographic printing plate manufacture comprises a polymer having appendant azide-substituted aromatic ester groups and sulphonyl urethane groups. The radiation sensitive compound is produced by a process in which some hydroxyl and/or epoxide groups of a polymer are reacted with an azide substituted carboxylic acid or ester forming derivative thereof and some hydroxyl groups are reacted with a sulphonyl isocyanate.
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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 January 21, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 21, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.