Redispersible silicon-modified dispersion powder composition, method of manufacturing it and its use
CA 2182202 C · Owner: Jodlbauer, Franz · Inventors: Von Au, Gunter; Adler, Klaus; Hopf, Heinrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dispersion powder composition which is redispersible in water and is based on water-insoluble homo- or copolymers of preferably ethylenically unsaturated monomers and one or more organosilicon compounds and, if appropriate further, additives, such as protective colloids and antiblocking agents, obtainable by a) polymerization of one or more monomers in the presence of 0.1 to 30% by weight based on the, total weight of the monomers of one or more organosilicon, compounds which are diapersible in water and have a boiling point under normal pressure of > 160°C from the group, consisting of silanes, polysilanes oligosiloxanes, polysiloxanes, carbosilanes polycarbosilanes, carbosiloxanes, …
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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 January 26, 1995 and granted July 31, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 26, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 26, 2017.
- 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.