Canadian application, no grantCanada
Polysiloxanes
CA 2092047 A1 · Owner: Von Gentzkow, Wolfgang · Inventors: Rampel, Barbara; Feucht, Hans-Dieter; Von Gentzkow, Wolfgang
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polysiloxane compounds with the structure: , where the following applies:, E = epoxyfunctional remainder Z = photopolymerizable remainder, R1 = alkyl with 1 to 4 C atoms or phenyl R2 = R1, E or Z.
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 March 19, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 19, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 19, 1993
GrantedNo grant recorded
Term endedMarch 19, 2013
Patent numberCA 2092047 A1
Classification (IPC)C08G77/14 +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.