Additive for the production of pervious ecological concrete having a high resistance to compression, bending and abrasion and the production method thereof
CA 2456925 A1 · Owner: Grau-Genesias, Jaime · Inventors: De Buen-Unna, Nestor; Grau-Genesias, Jaime; Guevara-Nieto, German
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an additive that is used in the production of pervious ecological concrete having a high resistance to compression bending , and abrasion. Said additive allows water to filtrate towards the subsoil and can be mixed with any type of cement, water and any hard aggregate in order to produce a high-resistance concrete with long durability made from dispersing agents, bonding agents, wetting agents hydroxypropylethyl cellulose or , hydroxypropylmethyl cellulose silico-aluminates and, optionally, water surfactants, bactericidal agents and antifoaming agents.
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 July 10, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 10, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2024.
- 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.