Canadian application, no grantCanada
Light-stabilized in vivo stain composition and method of manufacture
CA 2458613 A1 · Owner: Zila, Inc. · Inventors: Burkett, Douglas D.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Photochemical demethylation reactions in solutions of thiazine dyes in which , the dye molecules act as both sensitizer and substrate are reduced by , quenching triple-state dye molecules returning them to the unreactive ground state.
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 August 28, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 28, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 28, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 28, 2001
GrantedNo grant recorded
Term endedAugust 28, 2021
Patent numberCA 2458613 A1
Classification (IPC)C09B69/02 +2 more
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.