Preglued underlayment composite and associated flooring installation system
CA 2339424 A1 · Owner: Buckwalter, Michael E. · Inventors: Buckwalter, Michael E.; Kauffman, William J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A preglued underlayment assembly comprises a substantially rigid underlayment having an upper and a lower surface a pressure sensitive , adhesive, layer disposed on the upper surface and a release layer disposed on the , adhesive layer. Another pressure sensitive adhesive layer and another release layer optionally are provided on the lower surface of the preglued underlayment. One or more performance enhancing layers, such as foam and solid layers can be, disposed between the underlayment and the adhesive layer to modify and/or enhance various properties of the preglued underlayment. Mechanical fasteners such as staples, penetrate the preglued underlayment assembly and engage a structural …
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 March 6, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 6, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 6, 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.