Structural adhesive composition having high temperature resistance
CA 2102138 C · Owner: Howe, Stephen E. · Inventors: Munoz, Beth C.; Howe, Stephen E.; Abbey, Kirk J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A structural adhesive composition containing an epoxy compound an amine hardener and a hydroxy-substituted aromatic compound having a pKa ranging from about 5 to 9.7 and a boiling point greater than about 210°C. The utilization of a hydroxy-substituted aromatic compound having a pKa and a boiling point within the stated ranges provides for an adhesive composition which develops significant green strength undergoes minimal sinkage during the bonding and curing process and is capable of withstanding high temperature a conditions.
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 November 1, 1993 and granted July 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 1, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 1, 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.