Polycarbometallane
CA 2329720 A1 · Owner: Wagener, Kenneth B. · Inventors: Gomez, Fernando J.; Abbey, Kirk J.; Wagener, Kenneth B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polymer having a backbone repeat unit that includes at least two metal atoms bonded to each other and only one ethylenically unsaturated functional group wherein the backbone unit preferably has a structure of: -C(R3)=C(R3)- C(R3)(R4)n-M(R1)(R2)a-C(R3)(R4)p-, wherein n is 0 to 4; a is at least 2; p is 0 to 4; R1 and R2 are each independently selected from hydrogen halogen, lower alkyl having 4 or fewer carbon atoms alkenyl having 4 or fewer carbon , atoms or aromatic having one ring; R3 and R4 are each independently selected from hydrogen and lower alkyl having 1 to 4 carbon atoms; and M is a metal atom selected from at least one of Sn, Ge Pb, Hg, Ni, Pd, Pt, Cr, Fe, Co, Cu , and Zn. …
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 April 23, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 23, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2021.
- 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.