Surface topography enhancement
CA 2212735 C · Owner: National Research Council Of Canada · Inventors: Marincak, Anton
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for producing a topographically enhanced representation of an object, comprises a light source for generating a light beam for illuminating the object. The light beam has a zone where the intensity falls off rapidly with distance away from the beam. The object is scanned at a grazing angle of about 3 to 6~ in this zone as the light beam is progressively moved over the object.
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 February 14, 1995 and granted April 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 14, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 14, 2017.
- 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.