Storage stable polymer modified asphalt paving binder
CA 2099392 A1 · Owner: Nahas, Nicholas C. · Inventors: Gorbaty, Martin L.; Nahas, Nicholas C.; Bardet, Jacques G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Paving binders especially hot mix paving mixtures, having excellent storage stability, reduced binder runoff and high tempera-, ture viscosity are formed by adding a copolymer of ethylene with an alkyl acrylate or vinyl acetate and a neutralized sulfonated polymer to the asphalt. Preferably, the alkyl acrylate is methyl acrylate and the neutralized sulfonated polymer is a terpolymer of ethylene propylene, and a diene monomer.
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 June 30, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 30, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 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.