Process for the production of tenside-containing cation exchanger aluminosilicates
CA 1095803 A · Owner: Henkel Kommanditgesellschaft Auf Aktien · Inventors: Smolka, Heinz G.; Schumann, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved process for the production of tensidecontaining aluminosilicates having cation exchange capacity by precipitating the same from aqueous solutions of alkali metal silicates and alkali metal aluminates in the presence of ionic surface-active compounds from the group consisting of anionic surface-active compounds, cationic surface-active compounds and zwitterionic surface-active compounds wherein, the excess alkalinity is neutralized by conducting said process in the presence of an acid aluminum salt such as aluminum sulfate, aluminum nitrate and aluminum chloride. - A -
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 February 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 17, 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.