Floor covering with moisture and plasticizer barrier layer
CA 2349052 A1 · Owner: Evans, Paul D. Jr. · Inventors: Randall, Brian S.; Hammel, Wallace J.; Evans, Paul D. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A floor covering having a backing layer formed from a polymer composition includes a barrier layer formulated and configured to inhibit the migration of moisture, from a substrate into the backing layer and to inhibit the migration of backing layer, constituents out of the backing layer. The barrier layer also inhibits migration of, backing layer constituents into an adhesive layer attached beneath the backing layer, thereby preventing degradation of the adhesive's effectiveness due to interaction with, these constituents. The barrier layer also prevents contact between plasticizers used, in the backing layer and moisture within or on the surface of the floor to which the, carpet is …
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 May 29, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 29, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 29, 2023.
- 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.