Cyanoacrylate adhesives with improved cured thermal properties utilizing substituted aromatic additive
CA 2107444 A1 · Owner: Attarwala, Shabbir · Inventors: Attarwala, Shabbir
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract Of The Disclosure, A cyanoacrylate monomer adhesive formulation which has improved thermal properties resulting from the inclusion in the formulation of an effective amount for enhancing the thermal resistance of the cured polymer of a mono, poly or hetero aromatic compound characterized by at least three substitutions on an aromatic ring thereof two or more of said substitutions being electron withdrawing groups selected from the group consisting of NO2 CN, CF3, NR13+, SR12+, C(=O)R1, C(=O)OR1 NO, CCl3, SO2, S(=O), SO3, SO2R1, SO2OR1 and F, one or more of said substitutions being leaving groups selected from the group consisting of F, Br, Cl, l, NO2, CN SOR1, SO2R1 and SO2OR1, and …
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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 September 30, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 30, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2015.
- 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.