Canadian application, no grantCanada
Derivatives of porphycene of direct utility in photodynamic therapy or as intermediates for synthesis of photoactivatable dyes suitable for photodynamic therapy
CA 2101780 A1 · Owner: Koch, Peter A. · Inventors: Vogel, Emanuel; Koch, Peter A.; Rahbar, Afssaneh
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
New porphycene compounds useful as photodynamic therapy agents. The porphycene compounds have an active group capable of binding to proteins and peptides and facilitating decomposition of the porphycenes following therapy.
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 29, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 29, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 29, 1992
GrantedNo grant recorded
Term endedJanuary 29, 2012
Patent numberCA 2101780 A1
Classification (IPC)C07K14/79 +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.