Method for producing dust-free alkaline earth peroxides
CA 2502652 C · Owner: Solvay Interox Gmbh · Inventors: Dotsch, Werner; Buchholz, Ernst
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to dust-free alkaline earth peroxides. According to the invention, alkaline earth peroxides are mixed with compacting auxiliary agents and dry-compacted in a compactor, e.g. a roller press. Sodium bicarbonate cellulose, magnesium montanate or cross-lined silicone compounds for example, are used as compacting auxiliary agents.
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 September 24, 2003 and granted January 31, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 24, 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.