Method and apparatus for preparing solid surfaces for inspection
CA 2115676 C · Owner: Komorowski, Jerzy P. · Inventors: Komorowski, Jerzy P.; Gould, Ronald W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Optical inspection techniques often require highlighting of the surface to inspected. A method and apparatus is provided to prepare such surfaces for instrumental inspection by applying a sheet of a solid, deformable film e.g. a, polymeric film or a metal foil to the surface and then, forcing the layer against the surface in a controlled manner so that a contiguous relationship therebetween is attained. The film can bridge pores roughness and equalize the, reflectivity of the surface. The film can usually be removed and reused without affecting 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 15, 1994 and granted May 2, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 15, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 15, 2016.
- 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.