Production of acrylate-based solid
CA 2582925 C · Owner: Ahir, Vallabhbhai Bhanabhai · Inventors: Ahir, Vallabhbhai Bhanabhai
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
According to the invention, there is a method for producing an acrylate-based solid, comprising the steps of: (i) dispersing less than 20% w/v of an alkyl or aryl acrylate polymer/copolymer in a solvent comprising at least one acrylic monomer; (ii) dispersing in the fluid mixture formed by step (i) a further quantity of an alkyl or aryl acrylate polymer/copolymer; and (iii) curing the resulting material to form a solid Wherein the alkyl or aryl , acrylate polymer/copolymer of step (i) contains less than 0.1 % w/w of a free radical.
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 November 3, 2005 and granted February 25, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 3, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.