Lithographic printing plates for use with laser imaging apparatus
CA 2302249 C · Owner: Rorke, Thomas P. · Inventors: Rorke, Thomas P.; D'Amato, Richard J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provided is a lithographic printing plate comprising a support substrate (106) having disposed thereon an ablative-absorbing layer (102) and optionally, a , durable, ink-accepting surface layer (100) that is not ablative-absorbing. The ablative-absorbing layer may contain a high weight per cent of an organic sulfonic acid component. The printing plate may further comprise a hydrophilic polymeric layer (104) interposed between the ablative-absorbing layer and the substrate. The printing plate also comprises a primer layer underlying the ablative-absorbing layer with an adhesion-promoting agent such as a zirconium , compound, present in the primer layer. Also provided are methods of …
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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
- Filed September 21, 1999 and granted March 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 21, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 21, 2021.
- 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.