Polyurethane elastomer solution and process for coating
CA 2044304 C · Owner: Mitsubishi Jukogyo Kabushiki Kaisha · Inventors: Hayashi, Shunichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A solution of a polyurethane elastomer to be used for producing films and coated layers which, comprises a polyurethane, elastomer having at least a glassy region within the temperature range of practical use of such film or coated layer, dissolved in a volatile solvent, as well as applications of such solution.
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 June 11, 1991 and granted November 7, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 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.