Scleroglucane-added viscosity-controlled bituminous binder emulsion
CA 2044592 C · Owner: Huet, Yves · Inventors: Demangeon, Francis; Huet, Yves; Chaverot, Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Bituminous binder emulsion formed from a dispersion of an organic phase consisting of a bituminous binder in an aqueous phase incorporating an emulsifying system made up of one or more emulsifying agents a water-soluble thickener and possibly a pH regulating agent. The thickener which may be used to control the viscosity of the emulsion incorporates at least 40 % scleroglucan by weight. The emulsion obtained may be used for road building applications water-proofing in civil engineering or construction works or for industrial purposes.
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 October 25, 1990 and granted October 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 25, 2012.
- 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.