Cationic asphalt emulsions
CA 1315437 C · Owner: Blanpain, Peter Ronald Jeffrey · Inventors: Mori, Guy Frederic; Blanpain, Peter Ronald Jeffrey; Creak, John William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure The setting time of cationic emulsions of asphalt bitumen, coal tar or a mixture thereof may be shortened by incorporating into such emulsion at least 0.001 parts by weight per 100 parts by dry weight of said emulsion of a polycarboxylic acid.
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
- Granted March 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2010.
- 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.