Products of and methods for improving adhesion between substrate and polymer layers
CA 2276160 C · Owner: Caldwell, James Michael · Inventors: Patrick, Rodney Lane; Mekailian, Peter Uwe; Caldwell, James Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method for improving both adhesion between substrate and polymer layers and the durability of such composite structures; while maintaining the malleability and preferred characteristics of the original substrate. Quite unexpectedly the application of a layer or film upon an uncured encapsulated base substrate which has been encapsulated by the shear thinning methods of the present invention results in superior adhesion of multiple layers when compared to conventional layering coating or composite manufacturing methods. Moreover the uncured or at most, semi-cured, polymer composition applied to the base substrate ensures that the substrate maintains maximum …
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 22, 1999 and granted December 23, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 22, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 22, 2021.
- 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.