Peel and stick insulation having a common carrier sheet
CA 2551966 A1 · Owner: Ernest, Frederick R. · Inventors: Weir, Charles Russell; Ernest, Frederick R.; Hasselbach, John C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An adhesive is applied to a material under compression such that the adhesive penetrates the material when the material is a porous material (e.g. a fiberglass batt). Upon release from being compressed the material returns to nearly its , original size and shape and some of the adhesive penetrates into the material a given distance. Many, mats of the material bearing the adhesive at selected locations can be placed on a common, carrier for easy dispensing using a dispenser. The common carrier can be refurbished for, reuse.
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 October 16, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 16, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 2019.
- 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.