Method and apparatus for producing multi-color concrete
CA 2445559 A1 · Owner: Hamburger Color Company · Inventors: Yocum, William J.; Dunnous, Jack
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for producing multi-color concrete is provided which includes the steps of providing a pigment water dispersion providing a polymer binding , agent, mixing the pigment water dispersion and the polymer binding agent to form a first, spray color dispersion, discharging a wet concrete mix from a vessel spraying , the first, spray color dispersion onto the wet concrete mix discharging from the vessel to form a, pattern of applied color in the wet concrete mix and forming a resultant , structure of cured concrete. A system for coloring concrete based on the above method is also, provided.
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 17, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 17, 2025.
- 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.