Process for producing water-repellent, porous plaster moulded bodies
CA 2116443 A1 · Owner: Stanzinger, Emil · Inventors: Stanzinger, Emil; Neuner, Karl-Heinz; Martin, Jurgen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for Producing Water-Repellent Porous Plaster Molded Bodies, The process for producing water-repellent porous plaster molded bodies, more specifically porous plaster, panels, from the components plaster powder mixing water, foam and optionally, further common additives by adding alkylhydropolysiloxanes is effected in that the alkylhydropolysiloxanes are added to the mixing water or partial streams thereof containing common additives followed, by intense mixing of the mixture in a tube several meters long using turbulent flow.
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 August 25, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 25, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 25, 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.