Organosiloxane-bonded transition metal complexes
CA 2128353 C · Owner: Dauth, Jochen · Inventors: Peetz, Udo; Dauth, Jochen; Deubzer, Bernward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Organosiloxanes comprising at least one chemically bonded transition metal complex of Pt, Pd, Rh Ru, Os or Ir, having a, triazene, tetrazene tetrazdiene, pentazdine or triazene oxide ligand and are used as hydrosilylation catalysts that can be activated by light and/or heat.
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 July 19, 1994 and granted November 4, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 19, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 2016.
- 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.