Chemically fixed micelles
CA 2087125 A1 · Owner: Yoo, Youngtai · Inventors: Nair, Mridula; Yoo, Youngtai
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure There is provided copolymer particles wherein the particles are derived from chemically fixed micelles that comprise a copolymer. The copolymer is an amphiphilic block or graft copolymer comprising a water soluble component and an oleophilic component that can be crosslinked in an aqueous environment; and the oleophilic component is crosslinked. The particles can be dispersed in an aqueous continuous phase. The particles can contain other materials associated with the oleophilic component such as biochemical agents or other materials such as photographic materials such as couplers and dyes.
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 January 12, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 12, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 12, 2015.
- 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.