Image creation in solid material with grey scale capabilities
CA 2037889 A1 · Owner: Overdulve, Adriaan D. · Inventors: Wakim, Michael Jamil; Overdulve, Adriaan D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to:, The creation of an image of various resolutions on a solid material member with true grey scale capabilities by creating holes of different depths in the said materials. The method of creating the holes may vary and is not part of this invention. To create a true grey scale image on a solid material the hole depth isimportant and the amount of holes created will determine the resolution and the size of the image.
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 March 8, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 8, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 8, 2013.
- 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.