Adhesives and method for making same
CA 2370498 A1 · Owner: Tobing, Singa D. · Inventors: White, Thomas Edward; Klein, Andrew; Tobing, Singa D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to an adhesive composition comprising: microgels of at least one acrylic polymer; and an interlinking polymer covalently bonding at least some of said microgels to each other through said interlinking polymer. In one embodiment, the adhesive further comprises at least one non-gelled polymer, said interlinking polymer covalently bonding at least some of said microgels to said non-gelled poylmer. In one embodiment the invention relates , to an aqueous dispersion comprising: water; microgels of at least one acrylic polymer dispersed in said water; and at least one interlinking polymer capable of covalently bonding said microgels to each other through said …
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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 May 5, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 5, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 5, 2022.
- 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.