Insulation containing separate layers of textile fibers and of rotary and/or flame attenuated fibers
CA 2459520 A1 · Owner: Yang, Alain · Inventors: Shaw, Wayne; Yang, Alain; Tripp, Gary
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fiber insulation product for use as, e.g. a ductliner includes at least , one textile fiber (3) layer laminated with at least one rotary (2) and/or flame attenuated fiber layer. The fiber laminate provides improved thermal and acoustic insulation and excellent strength at a low production cost.
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 September 6, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 6, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 6, 2024.
- 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.