Functionalized bicyclic (meth) acrylates
CA 2198190 C · Owner: Ivoclar Ag · Inventors: Rheinberger, Volker; Vogel, Karin; Zeuner, Frank
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Functionalized bicyclic (meth)acrylates with norbornenyl or norbornadienyl groups are described. The functionalized bicyclic (meth)acrylates, which are suitable as an adhesion-promoting component of dental adhesives, have the formulae I or II below: where:, A-B = C-C or C=C;, X = CH2, o, N-CO-OR N-COR, N-CONR2 or N-SO2R, where R = C1 - to C12 -alkyl or C6 - to C14 - aryl Z - CH2=CH-CO- or CH2=C (CH3) -CO-; , V - C1 - to C6-alkylenoxy CH2-S, CH2-NH or COO- (C1 to C6)-, alkylenoxy; U - C1 - to C12-alkylenoxy, CO-NR4 -CO-O or O where R4 = H, C1 - to C12 -alkyl, C6 - to C14 aryl; W - m-fold substituted C1 - to C12-alkylene C6 - to C14- , arylene, C8 - to C16 -aralkylene or (-CH2CH2OCH2CH2-)n …
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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 February 21, 1997 and granted December 10, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 21, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 2019.
- 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.