Easy-working spray concrete
CA 1234584 A · Owner: Degussa Ag · Inventors: Hass, Hansjurgen; Deneke, Klaus; Allemann, Kurt
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A readily processable spray concrete comprising concrete containing cement, a solidification accelerator in an amount of 2.0 to 5.0 weight-percent with respect to the cement content and a concrete liquefier the solidification, accelerator being a highly concentrated aqueous-alkaline, solution of potassium aluminate potassium hydroxide and, potassium carbonate having a molar ratio of K2O not bound as potassium carbonate to A12O3 between 1.1 and 1.6 a, content in water of dilution such that the molar ratio H2O : A12O3 is between 9.5 and 30, and a potassium carbonate content of between 0.1 and 6 mol-%. And a method of preparing the spray 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
- Granted March 29, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 29, 2005.
- 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.