Process for the production of steam-hardened gas concrete
CA 1104166 A · Owner: Hebel Gasbetonwerk G.M.B.H. · Inventors: Doblinger, Heinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is disclosed for the production of steam-hardened gas concrete wherein calcium sulfate is added to a mixture of lime, cement and silicate-containing aggregate in an amount to provide a total sulfate content in the end product, expressed as SO3, from 2 to 5% by weight. At least a portion of the silicate component and the calcium sulfate are ground together. The end product results in excellent compressive strength.
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 June 30, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 1998.
- 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.