Method for manufacture of fine particles
CA 2447494 A1 · Owner: Auburn University · Inventors: Gupta, Ram B.; Chattopadhyay, Pratibhash
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for a manufacture of particles of a desired substance comprising: vibrating a surface (13) at a desired frequency; applying a dispersion having at least a solvent and the desired substance on to or close to the vibrating surface (13) to generate droplets; and applying an antisolvent at near or supercritical conditions to the droplets which results in the desired substance in the form of particles, the solvent being miscible with the antisolvent and desired substance being substantially in the antisolvent.
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 March 12, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 12, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 2024.
- 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.