Modified cementitious composition
CA 2061047 A1 · Owner: Tessier, G. G. · Inventors: Westhof, L. B. J.; Tessier, G. G.; De Peuter, F. L. J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cementitious composition which containc a base which preferably has a solubility which is greater than that of calcium hydroxide. The amount of this base is such as to provide 0.1 to 2% by weight of hydroxide relative to the weight of the cementitious composition. The cementitious composition may be a polymer modified mortor which is used as the anode overlay in a cathodically protected raintorced concrete.
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 February 12, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 12, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 12, 2014.
- 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.