Method of forming a pattern on a surface
CA 2016529 C · Owner: Speakman, Stuart · Inventors: Speakman, Stuart; Temple, Stephen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The method of forming a pattern on a substrate comprising the steps of applying a film of thermoplastic material under pressure to a substrate. applying energy to heat said film at a surface thereof facing said substrate thereby to bond said film to said substrate, selectively etching areas of said film to form a predetermined pattern on said substrate. depositing on said substrate in the areas where said film has been etched a layer of patterning material, and removing from said substrate said film remaining thereon. There is also described the application of this method to the manufacture of a printhead of an array, drop-on-demand ink jet printer.
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
- Filed May 10, 1990 and granted January 9, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 2012.
- 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.