Adhesive for bonding to low surface energy surfaces
CA 2399988 A1 · Owner: 3M Innovative Properties Company · Inventors: Momchilovich, Bradley S.; Ma, Jingjing; Gehlsen, Mark D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel polymodal asymmetric elastomeric block copolymer and a pressure sensitive adhesive, tape and adhesive backed article made therefrom such as a , polymer foam article having a substantially smooth surface prepared by meltmixing a polymer composition and a plurality of microspheres at least one of , which is an expandable polymeric microsphere under process conditions, including temperature and shear rate selected to form an expandable , extrudable composition; and extruding the composition through a die.
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 February 2, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 2, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 2, 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.