(meth)-acrylic acid derivatives of triisocyanates in dentistry
CA 1295622 C · Owner: Reiners, Jurgen · Inventors: Podszun, Wolfgang; Suling, Carlhans; Reiners, Jurgen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Meth)-acrylic acid derivatives of triisocyanates in Dentistry, Abstract of the Disclosure The invention relates to a (meth)-acrylic acid derivative of a triisocyanate of the formula in which, R1 and R2 are identical or different and represent hydrogen or a lower alkyl radical, R3, R4 and R5 are identical or different and denote hydrogen or methyl, Y1 to Y3 are identical or different and denote divalent straight-chain or branched hydrocarbon radicals, having 2 to 15 carbon atoms, which may optionally contain 1 to 3 oxygen bridges and can optionally be substituted by 1 to 4 additional (meth)-acryloyl-oxy radicals, and, the rings A and B are identical or different and can be aromatic or …
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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
- Granted February 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 11, 2009.
- 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.