Removable polyurethane adhesive
CA 2005965 A1 · Owner: Mobley, Larry W. · Inventors: Mobley, Larry W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polyurethane adhesive is prepared from a reaction mixture containing small amounts of chain extender material and a high equivalent weight of a polyol mixture containing significant quantities of monoalcohol. An article adhered to a substrate using this adhesive is firmly affixed to the substrate yet, can be removed without leaving residual adhesive on the substrate. In addition, this adhesive can be washed and reused if desired. 37,384A-F
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 December 19, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 19, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 19, 2011.
- 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.