Microgel composition and process for preparation thereof
CA 2506364 A1 · Owner: Qiao, Greg Guanghua · Inventors: Gurr, Paul Andrew; Qiao, Greg Guanghua; Solomon, David Henry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a microgel composition comprising microgel particles of weight average molecular weight above 50,000 wherein a 60 % w/w solution of the microgel in dioxane has a viscosity of less than 10 Pa.s measured by cone and plate viscometry.
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 27, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 27, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 27, 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.