Process for the electrochemical roughening of aluminum for use inprinting plate supports
CA 1280997 C · Owner: Pliefke, Engelbert · Inventors: Pliefke, Engelbert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a process for the electrochemical roughening of aluminum or aluminum alloys useful for printing plate supports, in which an electrolyte containing chloride ions and ammonium ions preferably, hydrochloric acid and ammonium chloride respectively, is employed. Also disclosed is a printing plate support roughened by the above process which possesses a particularly uniform graining structure.
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 March 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 5, 2008.
- 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.