Coated substrate drying system with magnetic particle orientation
CA 2295934 A1 · Owner: Minnesota Mining And Manufacturing Company · Inventors: Kolb, William B.; Huelsman, Gary L.; Munter, John D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Drying a coated substrate (16) which includes magnetic particles includes a condensing surface (22) spaced from the substrate (16). This creates a longitudinal gap (h1) between the substrate (16) and the condensing surface (22). Liquid (18) is evaporated from the substrate (16) to create a vapor and the vapor is transported to the condensing surface (22) without requiring applied convection. The vapor is condensed on the condensing surface to create a condensate which is removed from the condensing surface (22). Removal is performed, using more than gravity, without allowing non-uniformities of the condensate film to occur. The magnetic particles are oriented on the coated …
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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 November 6, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 6, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 2019.
- 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.