Method of providing a patterned surface on a substrate
CA 2060583 A1 · Owner: Minnesota Mining And Manufacturing Company · Inventors: Mucci, Michael V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a method of providing a predetermined pattern to the surface of a workpiece and, more particularly, a method for providing such a pattern by means of abrading. Many articles, e.g. boats airplanes, skis, air foils, mixing blades have fluids, flow over their surface. Such fluids include air other, gases, liquids, and semi-solids. The roughness of the surface of the article is critical, because it directly affects how efficiently the fluid flows over the article. The more efficiently a fluid flows the less energy is, required to transport it. It would be desirable to provide an efficient method for treating the surface of a workpiece such that the surface will be …
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 5, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 5, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 5, 2014.
- 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.