Aliphatic amino-substituted demethoxylated hypocrellins and their synthesis
CA 2426741 A1 · Owner: Shen, Tao · Inventors: Zhang, Manhua; Xu, Shangjie; Wu, Tao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention involves a methods and compositions for use in photodynamic therapy. Novel perylenequinone derivatives conjugates comprising , perylenequinone derivatives and a binding agent and methods of treatment , using these compositions are disclosed. The present invention relates to the field of photosensitizers possessing photodynamic activities. They possess high photodynamic activities and low dark toxicities which makes them as more , potent photodynamic agents than HPD against cancer and AIDS virus.
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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 October 24, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 24, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 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.
Timeline
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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.