Method for producing lithographic printing plates
CA 1100365 A · Owner: Polychrome Corporation · Inventors: Chu, Simon L.; Wilkes, Alan L.; Golda, Eugene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for producing an improved aluminum substrate for lithographic printing plates which comprises applying an interlayer bonding solution to the surface of an aluminum web heating said interlayer solution, on the surface of the said aluminum at an elevated temperature and removing any excess solution which has not reacted with the aluminum substrate.
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, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 5, 1998.
- 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.